I also feel the same way. I don't know what I am going to do with those tokens I received from airdrops and bounties since the market is going down. I am always having these regrets seeing my altcoins went down for almost -70%. What I can advise to you is to always check your wallet and once you receive your new altcoin, try to be updated with the platform's news when will it be listed to a trading platform. Immediately trade those for a profit since most of newly listed altcoins went up a price then gets dump after a week. If you think that altcoin you sold is profitable, try to buy it back at its lowest price or multiply its numbers then hold it. When the right time comes, you will be an instant millionaire.