I honestly think my biggest problem with the Zelda games is simply staying on-task. I can get easily distracted by stuff, so in a game like Zelda, with all the sidequests and stuffs, I usually take longer to complete the main plot than I should--especially in my first run. I'll often leave a temple/dungeon/palace right after I get the item from it simply to play with my new toy outside or to move to other temples. It's usually only the latter if I really hate the dungeon I'm in and the dungeon order in the game is non-linear.
Procrastinating with stuff is another big issue of mine. For example, having to gather eight shards of the Triforce of Courage in the
Wind Waker is like a chore to me, so I treat it like any other chore--I see how long I can get away with not doing it. Yes, I'm lazy like that.
Well, my getting distracted can also help with this one.
Using the term from the title of this thread, what I "suck" at, would probably be just figuring out what I need to do. Especially in those dungeons where one action will affect the dungeon (for example, the Water Temple in
Ocarina of Time had changes in water levels). It's difficult, because I get distracted by little things in dungeons, so I often have use reverse-psychology so that I do
not end up entering the first door I see. Sometimes, that is useful... but it doesn't always work... I seem to find myself in rooms where I have no clue on what to do quite a bit--either because I entered a room that I should not yet be in, or because I'm dumb with these puzzles. I'm actually good with puzzles, I just don't always get the ones in temples right away--again, if there are switches that dramatically change the dungeon and are required to be in a certain position for the puzzle, it usually takes me forever to figure out.