You should have invested thes 350$ in the ICO
But yeah I think you cant loose that much, alot of people expecting alot from it and it can double out for sure, but the market cap is already quite high.. there are better choices out there now in my opinion.
Oyster, Unify, Sumo, ICX, Onion, XBY to name a few. You have to do your own research and seeking coins you believe they are worth more than they are now
Soon you will have success.
anyway, Electroneum should be fine, but dont expect huge gains in the next months it has to establish now.