Do it in chunks and don't fret over your progress. The more you rush it the worse you feel.

I also noticed you're most likely not following a crafting leveling guide. If you enjoy doing things your own way then that's cool. Just want to remind you that having all the Lv.15 cross-class crafting skills help a lot in achieving more HQ results during leveling, which gives quite a morale boost to the player.

Also, leveling using leves is the fastest way. I accumulate leve allowances and spend them over the weekend. I don't go for the repeatable leves because they are the most inefficient use of time. The repeatable leves are only good if you want to save on leve allowances. For me, I never get enough time in one sitting to use all my allowances anyway, so I choose the most rewarding leve type: courier leves. Between my Return point and free teleport (for using OTP account protection), I don't pay extra for delivery.

At low levels you may be tempted to craft a whole batch of stuff then run back and forth for hand-in. This is monotonous and causes boredom. With courier leves, I only craft for that delivery, then go deliver. I can do this because I level all crafts in parallel, so each courier run I'm handing in items for 2-3 different crafts.

But I guess the most important thing still is try not to care too much about how quickly or slowly you're leveling. Enjoy the grind and it won't feel like a grind.