Totally agree with everything written there.
I recently lost $40 of my $55 winnings doing exactly what it says here, playing hands i didn't play when i started, trying to bluff a pot when i should have just dumped the hand instead of trying to represent top pair or better etc, so I have recently kicked myself in the ass (pretty hard to do!) and promised myself to get back to solid, disciplined poker, and hope to regain my lost winnings