I would not recommend to forget any kind of investment. This is one of the reason why many people missed out on profit in altcoin.
I believe the idea here is to avoid early and have a target take profit on a certain period of time. I understand the your logic since I experienced this miss profit when Bitcoin initially reach during 2017 but I still hold on until I manage to take profit on 2021 profit which is x3 of the ATH of 2017 that gives me more profit compared if I take profit during 2016 since there’s no guarantee that I will still buy back using my profit.
The problem on trading is fear of missing out or afraid to buy at all thinking that price will dip more. I believe holding on long term is really the best strategy but not to the point of forgetting it just to not touch it. Maybe once a month or yearly check is good just to make sure asset is still safe on wallet.