Delusions of Grandeur
You think you stand better. You want to win. You'll do anything to win. You'll press ahead with everything you have. This is the Delusion of Grandeur in Chess.
My total assessment was thoroughly wrong where I reached the following position with White to move.
I have a better placed Queen, Black's Bishop stands on the same colour as his pawns, I have a grip on dark squares.
I believe I should be better, I believe I deserve to win. I've assessed this incorrectly, and consequently I came up with the wrong plan.
White is slightly better, but Black really can hold by doing nothing. He especially shouldn't exchange Queens.
The Wrong Plan
As White, I thought my best plan was to centralise my King. Bring it to c3 where it is prepared to enter the battle after being centralised.
This was a product of being misguided by my assessment in believing I was better. I neglected that my King is the defender of the Kingside pawns. If anything, I should have placed those pawns on dark squares.
In a matter of 4 moves, from the safest of positions in the above diagram, I was completely lost.
My Game Annotations and Analysis