I think that it is true that trading is not an easy thing because not everyone can understand it as well as not every individual can make profit from it. But it is also true that if you start trading so there will be consecutive losses and failure. So now it is good that you learn from these losses and make good concept from these mistakes. Therefore you can make a profit in the future.
You are right the most important thing is to learn from previous losses and try to build a good understanding of the trading waves, once we lose it doesn't mean we give up rather set a record straight that we are not doing things the right way and need to develop our skills as to how effective we can trade to make future profits.
Once we develop personal trading skills and how to master the market wave it becomes easy to make accurate future trading decisions. Developing the skills and improving on them may not be an easy task.