1
After work, I relax myself by reading a book.
After work, I relax by reading a book.
When I want to relax me, I listen to some music.
When I want to relax, I listen to some music.
We do not normally use relax with a reflexive pronoun such as myself or yourself: ‘I need to relax.’ ‘Sit down and relax.’
2
We enjoy having a relax time in front of the TV.
We enjoy having a relaxing time in front of the TV.
Relax is a verb: ‘I relax by listening to music.’
Relaxing is an -ing adjective that describes something that helps us relax: ‘It was a relaxing holiday.’
Relaxed describes how someone feels: ‘I felt relaxed after the holiday.’