relieve anxiety w/out medication

I had this slight insomnia for quite a while now, I don't know if it's due to the Antiandrogen medication or hormonal treatment I am taking. I already avoid drinking coffee or tea after 4:00 p.m. but still it didn't work. Do you think I need sleeping pill? Well, If you know other smart ideas to relieve stress without medication, do share it to me please! I'll be more than happy to try it:)