不知量力

Maybe I'm just really greedy.
Don't be. You aren't going to able to do everything, and you're only going to mess up everything you're trying to do by trying too hard.
Or maybe I just don't deal with uncertainty well and try too hard to hedge.
But then of course such half-hearted hedging is doomed to fail. Just set your sights clearly, keep your wits about you, take a breath and GO. And never look back once in a while you can look back, but you really shouldn't be trying to move forward with your gaze on the road behind you, the other roads by the side, anything but the road in front of you.