At this moment it is truly crucial for believing in the crypto market. It's important to buy the dips and remain calm. I think we have a strong bull ran ahead of us. Don't worry if the market goes down - worry if you're not taking profits on the way up. The focus is currently on Bitcoin. All other altcoins are questionable in the long run as technology is evolving rapidly, and long-term investments in various altcoins are dubious. Besides Bitcoin & Ethereum, perhaps LINK, ADA, ...