Originally Posted by
least 
I think about, and often regret, the sober times I had built up and thrown away. But if I stay sober today I cannot worry (too much) about what I did yesterday or what I'll do tomorrow, except to learn from my mistakes and try to do better.
Congrats on 103+ days, Least!
I think looking back on past sober attempts with regret is self-defeating and could leave you vulnerable to weak moments with a 'why bother' attitude.
Try not to regret the past - it's made you the person you are today. Good for you.