Actually i found that cultivation is a bit of lost of time. I found that the only usefull abilities are Apothery and talisman making, but as thousand ppl is doing talisman making, taking apothecary and making ur own pots is a really really great way to be more powerful in the game. Lets say u gon go to conquer some castle, so u drink 5 pots to increase all ur skills by a lot in 2 hours, and then u got a bunch of action points and life recovery ones, at high apothecary lvl this is crazy, coz u can increase every skill in like a 10% wich i consider is really amazing.
Anyways is always good to give a try to everyhitng