my brother had cash out already and I am not surprise that he trippled his money investment. Good for.him but I think it must be hold still if I were on his side. The only problem is that I am not control of his money
This is the kind of thinking that makes you lose money instead of getting profits. Greed is not good. There should be a target profit and if you reached it, take the profit out just like what your brother did.
and seeing him profited in bitcoin makes me regret why I am.not investing and risking money during the bear market.
This just proves that your brother is a good risk taker and he profited greatly from it. That kind of investment strategy is not for everyone. If you are a safe investor, just stick to your investment plans. You should not be jealous of your brother's success and make your own.