Yes one ability to be able to hold his bitcoin till the anticipated timeline is very crucial for long term investor that is why is always advisable to have an emergency fund incase of any unexpected events that want to push one to dip hands into his investment so faith alone can not make our investment to be a success there should be a plan that is to be put into action back up by faith. All investors must have a plan on how they intend to hold there bitcoin till the anticipated timeline and also holding our bitcoin for a longer time does not mean that it is certain to be profitable at the end
Yeah it will endup slowing the growth of one investment, because for instance you are accumulating bitcoin and you making use of $50 weekly as your DCAing, and you kept removing $20 anytime there's any expensive. Which may keep on reducing your bitcoin Stashes, and you know bitcoin price wait for no one so either the price keep on going up like it's doing the past few months . You won't be able to buy back at a cheaper rate , so is better to have some emergency funds so that you won't put hands in your investment.