I'm a relatively patient builder. Through things I've learned either through experience or from reading on here, I've changed some of my methods over the years. Case in point: I really like pre-finishing fins by sealing them while they're still in the balso sheet, rather than trying to do it while they're glued on (learned that trick on here). I've also come to appreciate kevlar and the shock cord wrapped around the MMT method; having built Estes all my young years, I didn't know anything else existed. And I'm getting a little better at painting; this is where my patience is tested often because it involves a little planning ahead to get the desired look.
Where I stumble is when I let my enthusiasm get ahead of me and throw the patience thing out the window. I did it on my Dual Moon, and much to my chagrin I did it again on the 24mm bash; I forgot to run the kevlar to the MMT because I fabbed the MMTs on them. Had I taken a little more time, I would have done that part right, but at least it's a mistake that's recoverable. I just get a little too excited and I want to plow on forward without thinking.