The BEST tactic to beat 4-1-2-1-2 N Diamond

[P.F.C. Stompwijk]

I am tired to lose almost every time against 4-1-2-1-2 Narrow Diamond formation.
I want answers from 4-1-2-1-2 expert killers.

So please help me out of the 4-1-2-1-2 Narrow Diamond hell! :')

Thank you!