It's always good to see a professional, but you can also practice CBT techniques on your own. I do it right out of a book. It sounds to me like analyzing your wants and needs, and then developing a plan (setting goals) to meet said wants and needs will be useful.

Right out of my SMART Recovery workbook:

Goals should be SMART: Specific, Measurable, Agreeable, Realistic, and Time Bound

Sounds like you'd like to increase your social life and get out more. Start with something simple, like "I will spend 2 hours per week with a friend doing X (whatever you and your friends like to do)" or "I will call 3 friends this week and ask them how they are doing"

I'm no therapist, but I find that for myself, doing this helps IMMENSELY. It keeps me from literally doing nothing, which is what I naturally do given no external pressure.

"I will study for 4 hours today, from 12pm to 4pm"

Y'know, stuff like that.