For those who are not experts in trading, profit from trading depends on luck. Because they do not know how to do proper analysis and they can never take the right steps, they make different decisions emotionally and from there if their luck is good, one of the decisions is effective. However, those who are experienced and have many skills can do well in trading. And they are the ones who are successful. Those who trade by giving priority to emotion gradually start losing and they give up trading with failure. This entire process is a game of mind. Those who can manage their mind properly can achieve their goals and others consider failure as the end.
But does proper analysis as you said guarantee profit in trading, I don't know much about trading, I have never advised anyone about trading and of course it will be uncalled for if I advise anyone to engage in something I don't know anything about.
Generally failure is not the end in every other perspective of life, I understand that there's no free money anywhere and for anyone to win at least there might be something like stumbling blocks which might be part of the learning process as such it graduates people to their next stage of life if they can take it as a lesson but relating this to trading I don't know whether in trading, there's possibilty of individuals being guaranteed of profit after failure or does it depend on ones ability to learn further.