Yo delete your character and here you have your ‘reset’ (if that was meant serious…). Leveling wasn’t hard before btw, so a reset would only add another annoying two weeks to level up again; there are veterans who leveled their mains in the few Reborn test days from 0 to 20 already, playing days and nights long and it won’t take them much longer in the released game, only be an annoying hindrance to start over and over again.
It’s nice that you enjoy leveling, but others or most are not in the game for leveling anyway, but try to get that over with asap to play the endgame in groups, where you can enjoy 100s of hours of playtime. (Most MMOs are similar btw, leveling to max with quests etc. is a smaller portion of the game, before the endgame starts which mostly revolves around optimizing gear). There will be an open auction house so if you enjoy trading, fishing and farming you can do this and it’s sure easier when you are maxed and get around mobs in all the areas. A third activity which - likely - is best with max level is pvp.