My methodology

Alchemy: grab stacks of two cheap reagents that make a potion + waters/poison for each level. Spam until leveled.

Provisioning: buy ingredients for one recipe per level (bought from chef/brewer/guild store). Spam until leveled.

Enchanting: uh, this one sucked. I farmed chests with good gear and deconned the white runes until I was level 40 or so, then traded purple mats to a friend to make me a ton of purple runes to decon. Others might have a better method. If farming geysers is your thing, they give a blue rune.

Blacksmithing/Clothing/Woodworking: buy intricates. Spam decon until leveled.

Jewelry: pick a dolmen run that won't make you claw your eyes out. I also farmed chests that drop desirable gear, but that's less efficient. Decon until you feel like buying a bunch of intricates to decon until leveled.