An opportunity for seki ...

In a roughly even match, Go is a game of co-existence.
Don't be greedy.

... and I blow it!

Zero9090 (22k) and I were playing a 13x13 during my break. In an interesting exchange in the upper part of the board, I saw a pattern that looked like I could create dual life (aka seki).

So naturally, I instead tried to gouge-out one of the eyes and wound-up losing my entire formation. Very unwise.

I should have played F13 but intead placed my stone in F10.

This was the first time I had encountered a seki position (at least one that I recognized before a blunder) in one of my games. F13 would have resulted in a stalemate for the two interlocked formations.