You need to work out what really makes you tick. What gets you out of bed, what you would miss the most if you weren't around, what really makes you smile, what fulfills you.
Then make sure your life is full of these things.
I am finding it invaluable to be able to see a T and she helps me work on these same issues. Some days for me are worse, where I really question who I am and why I bother living life. But these phases pass. I need a friend that directs me back onto the healthy path.
I hope you can find you peace and purpose soon.