Virat Kohli on Thursday said not being able to contribute to the team's cause and his failure to live up to his own expectations bothered him the most during his prolonged lean patch in this year's Indian Premier League. Kohli roared back top form with a 54-ball 73 to help Royal Challengers Bangalore register a thumping eight-wicket win over table-toppers Gujarat Titans and stay alive in the race to playoffs. "It was an important game. I was disappointed that I haven't done much for my team and that is what bothers me, not the stats. Today was a game where I was able to create an impact for the team. Puts us in a good position.