Practice conjugating the verbe Se sentir. Make sure to also change the reflexive pronoun "se" for each subject pronoun. Ex: Je ME sens, tu TE sens, etc.
The verb Se sentir can be used with an adverb (that never changes) such as Bien or Mal. It can also be used with an adjectif (that agrees with the subject pronoun) such as "je (female) me sens fatiguée".