Feelings are caused by thoughts. And thoughts arise from perceptions.
That counts when playing badminton too.
When wanting to play with positive and satisfying feelings, awareness of this process is favourable.

About the process
When playing badminton and looking around at the court and opponents and at the situation, these are interpreted automatically. That is, opinions are formed about. These opinions are not always consciously formed, and can stay hidden, but often just arise. Anyhow, they add significance to the occurences of the play and the situation. And they go automatically with feelings, and that's not always consciously too. Thoughts and feelings are stored in memory together. Play and situation develop and change, and new thoughts, ideas and feelings are formed and stored.
This process goes on and on.
When entering a situation, and recognizing this from earlier, thoughts about this with their related feelings come quickly up from memory to awareness. Such an interpretation is quickly made, and that is practically useful.

Feelings are, but not always, being aware of. One feels free and happy, or maybe uncomfortable. The cause is often sought in the situation, so extern, not in the inside own process of looking and add meaning and feeling.

Perceptions, thoughts, feelings
In badminton, perception regards all that is seen. That is the court, the opponents, the shuttle, one self, and all the details. Also all the movements of players and shuttle belong to this. By the way, perception regards also hearing, feeling and smelling.

With this perception come thoughts. Thoughts are the interpretations of what is seen, so these are the meanings and importances of the place and flight of the shuttle, of the positions and techniques of the players and their movements, and of the own position and movement. And thereby also of the situation of playing a badminton game itself.

With these thoughts and judgements arise feelings. They depend on these thoughts and judgements. These feelings are for example anger, anxiety, threat, impotence, joy, hope, confidence, satisfaction, loose oneself, and many others. These feelings can be very small and quick and also large and lasting.

What and how to perceive
When playing badminton, perceiving the court with the net, the oponent or opponents, oneself, a partner, and the shuttle, come first. To get control over the game, perceiving all these should be persisted. Keeping the mind open, and not being preoccupied with efforts, the shuttle or the score, will during a game enable to see all what is happening. So, stay relaxed to see how things really are.

Which thoughts and judgements to have
The perceiving of the game leads to interpretations. These are thoughts of the things that occur. These are thoughts of how to place the shuttle best, how to position on court, what the partner is going to do, or what the opponents are going to do with the shuttle. And also thoughts of what is going to happen with a game; that is, loosing it, or winning it maybe when playing in an other way. And further what other people will have to say about the game, the playing and its results.
In fact, when playing, thinking should be directed, by attention, at the court, the players, etcetera, and at how to place the shuttle and choose position. In fact, thoughts should be based on what is really seen. Not on a too quickly made assumption.

Which and how feelings to have
Feelings that contribute to satisfaction are the relaxed feelings of spontaneous and attentive play. But many other feelings can come when playing too, when yet being possitive or negative. Outing these can bring a feeling of relief.
Awareness of feelings start with awareness of the own body.
Most pleasurable would be, when playing badminton, when during playing feelings arise of free, relaxed and pleasurable responding to the changing situation.

Controlling of perception, thoughts and feelings, and changing these
Many less pleasant feelings may occur too when playing, like anger, anxiety or tension, and even not feeling anything at all.
Awareness of the situation, interpretations and feelings will help control the way of playing. Thus in a relaxed way, confidently, attentively.
When aware, the situation will be seen as it really is. Thoughts can then be controlled upon their truth. Their matching feelings will change with these.

So, when talking about feelings and the wish of changing unwanted feelings, awareness of these feelings is important firstly. Sometimes this is really a task because it brings an unwanted confrontation with it, though it happens sometimes just naturally.
A second task is to realize what the matching thoughts are which go with these feelings. Not an easy task sometimes also. It is thinking about unpleasant things.
The third task then is to look at the situation how it really is. Again not always easy, looking at a situation that is hated.
The reward however of becoming aware, is feeling the feelings, thinking the thoughts, and perceiving the situation as it is. And then becomes playing freer, more relaxed, more spontaneously, with more pleasure.

As an example
When often feeling tensed when playing badminton, this feeling can be made aware and then admitted. Other feelings can be discovered then also, like being anxious. The situation can be experienced then as being threatening. For example, playing there in the middle of a hall in the sight of many people can cause tense, based on a negative thought about that situation. The thought then might be that these people think and look critically and condemnatory at the play and behaviour. When then looking well at these people and looking if that thought is right, it will be discovered that they are just interested and empathic.
Perception has changed then, and with this the thoughts, and with that the feelings. Playing can be changed too then.

Knowing own perceptions, interpretations and feelings and staying self-consciously controlling the own playing situation will give a relaxed, attentive and pleasureful game.