Time in the market > timing the market, a phrase that you can break down into just one word.

Conviction. 

This will also determine how long you can hold your bitcoin.

So how much conviction will you have? Well this depends on how much you are susceptible to your ego. 

If you are more susceptible then you'll do less research, experience more fear during price drops, explore things like MSTR and altcoins, and ultimately care more about being right than being useful.

This is not the way.

Good luck.