What if?
To be honest I am guilty of asking too many "What if?" to my self and sometimes I missed a great opportunity because of doubting to take a try. But I don't want to blame my self for missing an opportunity because of that "What if?". I just remind myself that I don't have to pressure my own self and let give a try for a thing I am ready to take a risk.
Not all things are meant for us, some things do take time before we have the courage to do it. No need to hurry, just do it when you're ready and strong enough.