Unless I’m happy (feel good), I won’t get what I want.
Unless I do what I want, I won’t be happy.
Unless I get what I want, I won’t want to (feel like) doing what I want.
Unless I’m happy, I won’t do what I want.
Unless I get what I want, I can’t be what I want to be (feel good, etc.)
Unless I get what I want (from you) I won’t feel like (enjoy) doing what I (you) want (for you).
If I don’t feel like doing what I (you) want (for you), I become unsure of my desires to be with you.
You won’t feel like doing what I want (from you) if you see I’m unsure about what I want to do (for you).
I want to be with you, but if I or you don’t feel good, I’m afraid I won’t want to be with you, and I want to be with you.
If I or you don’t feel good, I’m afraid you won’t want to be with me.