Seeing the end of Season 2 again makes you feel a lot less bad for Jesse given his current predicament as we head towards the finale. Recapping just the final three of Season 2 alone:
-Showed up high and late to the meeting with Gus, causing Gus to skip even meeting Jesse and Walt.
-After Walt salvaged the deal, Jesse was so zonked out on heroin that he almost caused them to miss out on the 1.2 million dollar deal.
-He allowed Jane to blackmail Walt for the money, by allowing her to threaten him with being outed to the cops and the media.
Well done, Jesse. Always the screw-up.