Am I costing myself money?

[luv_the_game]

Last week I experienced my first major losing streak in my young poker life (lost $400 in 24 hours) playing $25 and $50 buyin NLHE. Before that had been consistantly a winner (up $1200 in 120 hours of play). I just seemed to be taking bad beat after bad beat. After examining my game and reading posts here I decided that i was not playing aggressively enough when I thought I was ahead. I adjusted and started overbetting the pot by about 5-10% when I figure I am ahead. This radically changed my results. I went on to win back the $400 plus $200 more over the next 24 hours of play.
My only reason for questioning my results is I am winning a lot of pots without a showdown. In a recent session I won 5 out of 8 pots with a showdown and 50 without a showdown. People seen to call the first and maybe the second bet or raise and fold to the third. This strategy has really cut down on suckouts and bad beats, but I am concerned that I may not be maximizing my profits with my good hands.
I like the results, but I don't want play a non-optimal strategy based on short-term restults.
Any thoughts on this would be appreciated.