Well.... this one was pretty recent and still makes me sad but I shall share.
Game is DOTA 2, our team (Dire), Doctors Corrupt (DC) versus theirs (Radiant - they didn't have a fancy tag or guild/team name).
Anyways, to start, I and a friend of mine fed a little early trying to be aggressive and it backfired initially. After that we were pretty much on our heels the entire match, which lasted a total of 61 minutes.
The only reason it lasted so long as I was able to farm (being the carry) with Juggernaut and recoup my earlier stupidity and we had some great defense. Basically we just defended until we were about even and could actually push back little bit at a time.
Near the end of the game, we wiped them, to include a couple buy backs. So we managed to finish pushing mid lane all the way to their ancient but had to fall back due to losing two and they were reviving back in. Our strategy had been working the whole game, fall back, defend, kill them, push forward. Just keep at it right?
Well I should have, mainly cause it was my strategy, but near the end, I got cocky and stupid. They were all mid (or I thought they were) pushing back our creeps to try and finally finish us off. I was at their secret shop when I noticed this and thought to myself, I have a free lane to their ancient. I could finish it now. My teammates implored me to fall back and defend, yelling at me this is my strategy the whole time. I said I got this, I can end it. I walked into their area and Drow Ranger (the one I didn't notice) was standing there and promptly destroyed me. They overwhelmed our defenses and finally won.
Needless to say, I try not to cowboy games in DOTA anymore. XD