Look at missing a big move from a more objective perspective. If you have missed a big move and were never in the position in the first place, you haven't made anything nor lost anything - neutral. What has happened, however, is that your abilities to see large moves setting up might be getting better. That is a good thing and will only build confidence.
I suffered through about 2 years of missing moves and enough "shoulda, coulda, if only" to make me rich if I had a buck for every one. What I did do was change my perspective to more of a "What does this tell me about my abilities to analyze the markets/positions?" attitude. That has made the biggest difference in my P/L going forward. Confidence in yourself is what you will slowly be gaining and that is worth more than all the riches that will follow.
If you know how to take a loss and keep it small, the next step is confidence. Once you have the ability to open more positions and keep them under control through your discipline and confidence, you are on your way. Also once you do this your gains on each move will be larger.
Many of the traders that take many small gains are usually only one step away from unlocking gains they never thought possible, but their lack of confidence in themselves is hobbling them. I'd say there are many more good traders that lack confidence than there are just plain bad traders.
Good Luck!
