There are a couple skills that take a crazy amount of time, but then there are others that are super easy to raise if you know what you are doing. There are a bunch of guides out there telling you what to fight at what level, what to make, cook, mine....ect.
Just have to decide, am I gonna work these skills from scratch or buy the token? My first tamer, was all organic and the old school click to tame. Second tamer used masteries and the third one, Mythic Token.
I will say I also just created a new Dexer character that I will be leveling old school style. Gonna earn every single 0.1.