I know how you feel, growbitcoin. I signed up for and did all the tasks for the recent NRG airdrop, then either entered the wrong email or the wrong NRG address ( in any case, something went wrong) so I never received my NRG. They were giving away 100 which comes to about $215 at today's price.
Same as you said: I was lazy, didn't double check everything and it cost me.