Principal is always the most important
If you accidentally make a wrong move and get stuck, it is crucial to preserve your principal as much as possible. During a market crash, it's important to cut losses in a timely manner to preserve most of your principal and maintain a basic foundation. There is still hope for a comeback. Be patient and wait for the market to hit rock bottom before using the remaining principal to buy in. Don't get stuck and go down with the market; often, selling a trapped asset before a crash results in a maximum loss of 50% of the principal. If you ignore the situation and hold on, by the time the asset hits the bottom, the remaining principal will have almost no chance of recovery.