Personally I have experience first hand how impatient can make you lose big time in this space. I had the opportunity to finally make it big but my lack of patience denied me the opportunity. The feeling sucks no doubt when you look back at what would have been.
Experience is the best teacher,  this days, I tried to hodl certain projects I see potentials in them, dump the ones with no prospect and most of all I tried to build my portfolio with potential coins.
It is also important to have a backup funds for stormy market like what we are currently experiencing. Situations like this in most cases are blessing in disguise when the market fully recovered.