So the other day I accidently send a transaction with no fees. To eventually make it go through I used a transaction accelerator. This made me wonder if I can use a simple cpu or gpu miner and tell it to confirm my own transaction if it ever gets stuck in limbo again. is this possible and how can I do it?
Very, very unlikely.
You would have to solve a block with the same diff as the other miners, so you'd need a truckload of hashpower to do this... It's called solo mining, and its nearly possible to hit a block with a cpu/gpu minwr