If you have a dream, go for it! Don't beat yourself up if you have to take time out to care for your kids or work your "day" job. Don't worry if you need a day off to decompress. Your kids are important. Paying your bills while you reach for that dream is important. You are important. The point is that you keep going. Giving up won't serve you, or anyone else.
Hopefully, life won't get in the way of my timeframe. If it does, please forgive me, as I learn to forgive myself.