A trader has to have patience & discipline to succeed.
The bottom line is – you need to work out a plan, and then stick to it…regardless.
If you decide on trading only a particular strategy, then you must wait for that setup to occur. In the meanwhile, if price makes some moves, you should not trade those, simply because they do not fit within your plan. 
Psychologically, you need a lot of discipline to stick to a plan, because you always feel you are missing out on the moves.
And if you are trading full time, then this becomes a very big issue. Since you keep waiting for a trade & if the opportunity does not occur, then you get tempted to twist your plan & get into the action…..which is the surest way to disaster.
One can make a living from trading…provided it’s done in the correct way.
It’s not an overnight-get-rich-scheme.
It has to be built up slowly & takes a lot of effort & dedication.
Once you accept this fact, it becomes somewhat easier