Burning out varies from person to person.
I’m a crafty person who thrives on chaos and crafts. Chaos, especially. I do crafts and, provided my wee ones don’t drive me batty, I typically don’t have a problem with “burn out”.
I’d suggest what @thewheelsonthebus: said about lists and deadlines. I’d also suggest NOT procrastinating. (Something I’ve turned into an artform. 😉 )
Make a list of things that need to be done and stick to it. Remember that DIY’ing can cost more than buying whatever it is already made (invites/std’s, etc).
Set aside a time for your crafts and stick to it as much as possible. Whether is x-hours at night or x-weekends, etc.
Have plenty of food, drinks, snack available as well as all the supplies you need BEFORE doing your crafts. (hunger and not having what you want can really make a DIY’er cranky… and you’ll end up putting it off and/or forgetting about your craft if you don’t have all the required items.)
Also, have something fun to watch/listen to. Movies, TV series, music, whatever you prefer to work with.
If you are NOT a crafty person, space your crafts apart and give yourself PLENTY of time, otherwise you’ll burn out FAST.
If you make a mess, clean it up when you’re done. Otherwise, you’ll put it off and hate yourself later for the mess. Also, your pets/kids will decide it’s a great thing to play with and, again, you’ll regret your decision to not put it away and out of little fingers/paws reach….
DIY’ing and crafting is fun, but it’s also something that can be frustrating and hair-pulling.
I’ve had to learn to just put the craft up and step away from it or a)break it into small pieces or b)go insane.
not sure if this is helpful, but I figured I’d give you my thoughts/experiences. good luck and have fun!!!