What to I have to sacrifice to whom in order to run well at NL$500?

[Caballa]

Beat: This month at NL$500



By comparison, this month at NL£200 (graph says dollars but is actually pounds)




As you can see I can beat the equivalent of $2/$4 just fine, but once I make that drastic leap to $2/$5 my poker skills fail me and I'm out of my depth. HELP ME BBV.

Also;
Brag - If I play at this rate for the rest of the month I'll get a free Caribbean Poker Classic entry through frequent player points.

Beat - going on holiday in a few days until September.