Chess Rating vs. Chess Playing

No tactics training, no chess playing, no chess studying... What does that equate to? Losing in 26 moves, not managing my time correctly, missing tactics, losing rating points. 

In this game I had the white pieces and it is games like these that make playing chess so frustrating because winning or losing can only come down to how well you play. My rating was 1592, his rating was 1384. On paper this looks like a clear win for me and when playing at my full potential it probably would be. Just another example that your rating is not nearly as important as the quality of your play.