I like to use a military approch (some habits are hard to break!).
Plan out your project and prepare your resorces in advance (Note: Proper Planning & Preperation Prevents "P" Poor performance

), try to anticipate any problems or delays that might creep up you and bite you when/where you least expect it

, have an alternitive plan ready in case Murphey and his band of gremlins ambush you (as they undoubtedly will) at the worst possible time

, and ensure that each task (project) is complete and operational before proceeding to the next.
Despite all that, I, as I'm sure that many others in this fine hobby of ours do, find that I tend to take on too many projects and get "mired down in the swamp" and often the whole thing starts to look like Custers last stand

.
Still, I have fun, and, as all of my parts are (somewhat) intact, I guess that I am doing OK.
Also, when in doubt, Ask and the Gauge is a great place to do so and above all, Have Fun
Cheers
Terry