These are your dailies and are a crucial part of your gear grind. Make sure to pick the quests with Leapstones and Lost Ark Gold
Harmony Shards - the quest from Peyto to cab ride, or to kill the reanimated horsemen in Fesnar Highlands are both good examples. You will unlock more unique Una's Tasks as you progress through Island quests and the story quest in Rohendel, Shushire, and the other endgame continents. Aim to complete daily tasks that help you get past honing chokepoints.
The main aim of the game now is to upgrade your gear. This is done at the Gear Honing spot in North Vern or any other large city. Items require Harmony Shards to upgrade, which are earned by completing quests and island missions, as well as grinding Dungeons and Raids. You will also require Guardian Stone Fragments and Destruction Stone Fragments which are primarily earned from completing daily content like Chaos Dungeons. You can find more information on gathering honing materials in this guide.
The island missions are essential if you want to rapidly increase your gear score. Here's a rundown of what sort of path you want to take through the islands.
Sail from East Luterra. Hit Serenity Isle, Toto silver Island, Freedom Isle, Blackfang's Den, and Lullaby Island, in that order. Freedom Isle and Blackfang's Den are two of the best islands for Pirate Coins available - you will need Pirate Coins to buy the Song of Resonance from the Peyto ship (Treasurer Ingram) which is used during the Lullaby Island world event (every two hours, watch your alarms!) Next, head to Astella, Starlight Isle, Panda Island, and eventually Peyto Island. Complete quests cheapest Lost Ark Gold where possible, but do not complete quests that send you to other continents (unless you want to, of course, we're not your boss) Next is Dreamgull Island (the quest here is so annoying and long, but worth it), Golden Wave Island, White Wave Island, Kalthertz, and Shadow Island.