Similar to any other profession; you will have to master this field as well & could be much more difficult & painful.
But once you master it; developing robust process, mindset & discipline to follow & execute it well; it will bring lot more fun, job, peace & the freedom !!!
Successful traders do not have same system/process in place.
Only one thing common in them is ""to work hard to build & refine the system periodically & execute it with utmost discipline"
Figure out your strength & weaknesses, build a system, keep refining it & u will get there