I suffer from insomnia as well. I slept well last night, but I'm 50-50 on sleeping well vs. poorly. When I'm restless, I typically sleep about 2 hours, and this can go on for 3-4 nights in a row.

I feel regular exersize helps a bit, but my real issue is my mind racing with a range of topics, and I just can't stop it.

But I don't stop commuting because of it. I've still got to take on the day and get some energy and clear my head.

A couple of things help me. I drink a cup of chamomile tea before bed, and it helps a bit. I try to go to bed at the same time every night. Also, I turn on a small fan for background noise.