preparing for long term hodl is very important, the points above are very note worthy and i believe if we can key into them we should be able to make gains at the end of the holding period. alternative source of income should only come as the last point because there are so many people that depends only on crypto and they have been able to manage their resources very well to be able to hodl for long term.
Indeed, holding for long term is not that easy and temptation is there if something went wrong in the flow of the market. Holding worthy coins is a must to be able to hold without worrying if your decision is right. Having another source of income is also needed so you dont need to sell in a wrong time because you're in need of money since you have other resources to count on.