The mistakes you've made in the past are all in the past. To spend time regretting them today is a monumental waste of your time, especially if you're trying to set goals for your future. Because when you're thinking about what to do next in your life, you have to put what you've already done in your life out of your mind. Be careful starting new projects when you're in a reflective frame of mind because you won't be able to be objective. You could shy away from things you shouldn't fear.