<prompt> Human: Before I ask my questions, here is my investor profile:- Im 30 years old- I dont have any debt besides my mortgage I have 14 of total value equity- I have very stable income- I have no problem taking risks, Im in a pretty cozy financial situationMy portfolio consists of 5 different Vanguard ETFs. 80 Stock, 20 Bonds and I also a good chunk of cash in a high interest savings account rainy day emergency fundFirst question:In 2008 my portfolio took a dip like everyone elses and I would like to be able to act differently this time around if another savage market crash happens. What would be a good trigger -10? -20? to sell off all investments so one could try and wait to hit bottom and buy the dip. Second question:Lets say I dont sell before the next market crash. Will the value of my investment always bounce back to what they were before if I wait long enough? After the last dip, I completely revamped my portfolio in 2015 and it still hadnt fully recovered from the last crash. Thank you!  <response>: Dont try to time the market. 