I personally think that the value of Bitcoin may increase further in the future. So it is better to keep buying bitcoins instead of selling them and those who are old bitcoin users should advise new ones.
Sometimes we need to make a breakthrough in our investment to get great results. But, There is nothing new except to keep collecting and HODL your BTC coins and keep the key so that no one knows. Nowadays cryptocurrencies move strongly not only against bitcoin price but also altcoins. Each coin has its own excitement. Meanwhile, today it is not the case anymore, too many altcoins are just garbage in our wallets because many fake developers have emerged in the market. We now have less trust in altcoins.
What you said is very right in investing we must have our own plan in achieving success in investing and choosing to focus on collecting Bitcoin consistently is certainly very good for the future and keeping wallet keys well is certainly very important so that it is not in vain after collecting, each has its own appeal to the coins they will choose to invest in and if you currently have less confidence in altcoins you must be very careful in choosing the asset when you want to hold it.