What to do if i'm feeling better and less depressed than years! why is that?

Embrace the good: I don't know any particular circumstance of the change in your in feelings. If you are in therapy, you might want to address the positive change with your therapist. Generally, embrace feeling less depressed; work on symptom recognition that will help you work through return of the symptoms. Good Luck!

Enjoy!: Perhaps your life circumstances have changed, your RESPONSE to life circumstances may have changed, hormones may have changed. Please use what you have gone through to strengthen you for the future and perhaps help others through your compassion. I'm happy for you. Peace and good health.