I'll tell you what worked for me - balance. I knew that if I
only focused on recovery it wouldn't work for me. I needed balance in my life, including family time, job time (for me that was volunteer work 3 days a week due to a major move), me time (reading, music, alone time), outside/walking time. I needed all of that in order to succeed. I still require balance in my life all the time and it's when things become unbalanced that I begin to feel not right.
I think that fear of being alone means that you're uncomfortable sitting with your feelings. I used to be overly busy and I realized in recovery that I was avoiding my feelings by being busy. Again, this is just what worked for me. You need to find what works for you and embrace it.
