I think the best investment tool is education, Invest in yourself, learn, there is a lot of information and tools you can use if you know what are you doing. The best is most of the information is available free of charge, don't follow gurus that sells you courses, follow your own path.
Exactly, personal development should be the main goal. There are thousands of Gurus who are ready to help you master your mindset, thinking methods that can help you to accept the right investment decisions too. As an investor, OP can invest in top cryptocurrencies and he has to be patient in taking the profit on the altcoin portfolio.