It really depends on you, your motivation, your energy, your feelings, your emotions. How desperate are you? I am very desperate, personally. Desperate to not have anyone watching over me or controlling me in any way. Desperate to have a life that I can control. Desperate to do whatever I want to do and whenever I want to do it. Desperate to find meaning in life. Desperate to be the absolute best at something that I really like. Therefore, desperate to become rich. I have already become nearly the best in some areas of expertise, but these are areas that I was somewhat forced into (not by my own informed choice) and I would not like these to be the only ways in my life. I expect way much more of me and I actively work towards it. I do not give up easily. Whether life will take me away from poker and onto something more rewarding, that's to be seen.
Yes, you can become rich from poker just as much as you can become rich from any other activity that you have control over, are good with numbers and are happy to risk everything and bend over backwards for to do it excellently, not just up to the level of "it'll do" as it never does.
Bit of advice: Whatever you actively do with your time, it will at least expand your vision and there's always a possibility, external factors around you will show you something you possibly like more to do that everything you thought you knew. You really never know everything, but as long as your active, things will simply show up to you.