Whenever you see that type of price decline and massive jobs are lost, it is a buy. The money gets made putting everyone back to work so to speak. Relatively speaking we are now at the other end of the risk/reward structure for the next few years. Meaning, it is likely to go higher unless we have another situation that nobody can plan for. This is why having a plan in place whether you are trading or investing is so important. 

I personally like to trim some things that I bought in the crash periods whenever we have the euphoria periods and are at new highs. I will be looking at doing so if the market breaks out and runs up near the measured target areas. I use that cash for when we get nice corrections and/or crashes whenever they happen in different sectors or the markets in general. There are times when I will also take part of the profits and invest it in a long term growth story that I can hang onto. Again, I'm looking for healthy discounts when I enter. It takes patience, just have to take what they give, whenever they give it. I wrote this to benefit others, though also as a journal entry to encourage myself to stay with my plan which has worked for decades.