The easiest way to avoid regrets is to ask yourself this question, "If not now, when?" It's a powerful way to put life and our decisions about how we spend our time into perspective"
2.5 miles? That's wonderful! You're stronger than you think!
I don't know if you'll find this helpful, but when I go on vacation, I begin "on track" eating the morning I am leaving. That way, when I get home, I am at least halfway done with the day!