hahaha, that was just what I was going to write !LOL
Most of the people react like this, I think. The solution doesn't exist, because otherwise everybody would be rich.
Something which helped in MY case (no financial advise, you know....) is DCA.
I'm doing some hybrid form where I buy automatically a small amount and where I decide to buy more when the market "really" goes lower...

You're right when you say that you could get in the same situation and "not buy the dip" again, so just ordinary DCA could help...

Good luck mate !LUV