Selling for a loss is always difficult, I know, but I got myself over it.
Patience must be part pf tactics, indeed, do not sell too quick! But I must say, when staying in the coins I bought at record high; seems waste of trade funds for some of the coins I was in.
Losses: On paper I had more like 75% loss against record high, in terms of BTC, in terms of US$ value less, but I always count towards BTC since I expect BTC is go more up and it is the bass coin I use for my trading fund. Also my losses were very manageable; Like you, all training money since I only started trading in marhc this year and tried different tactics: 1) 8-10hrs day, minute wave riding...was successful but need to have large amount of funds to trade with since it is a day job 2) breakout trading (with sell contract on gain of 10% or 20%), identifying the coins is not that difficult when the market is up and up and up since all coins will eventually breakout, but this tactics is becoming much harder in times we are in since the record highs 3) some short/mid term trading based on dumps and historical pump/dumps. When not wanting to spend too much time on trading, I think it'll be much better to spend the time on research and use tactics of mid term trading and mid/long term investing. I found this coin TAAS, it is kinda crypto fund, so they determine what coins to buy and sell and when. Those who got TAAS in ICO get some dividends, I suppose the token value will go up based on performance mainly, next to some speculation.

Thank you for the vote! and Booster!