in the achievements we get cannot be separated from trying, in the crypto world we always invest even though it is difficult to predict market prices, it is always done, it takes strong confidence to do it, and I focus on ethereum and other coins to maximize income.
Doing it independently is the best way to be able to achieve something that we are going towards, although it may take hard work and some problems may happen arise but it will not detract from keeping trying independently.
The same with the crypto world, investing by trying to continue to be independent by predicting the obvious market price is not easy in Nevertheless, it should be done with the aim of strengthening self-confidence, so it can achieve the desired goal.
I think you are right to focus on ethereum because it is the best altcoin to date and very good to be an investment. Of course, not closing off the possibilities with other altcoins is no problem.