Seems most business tips only deal with how to set your prices. But there's a whole lot more to it.
The single biggest issue Ive experienced, and seen in others, is getting the job done.
Whether you're working for a remodeling company that keeps you busy 70% of the time, or have a solid customer base, remember that people who want you to do their work almost never consider that at some point you have to be on a job site swinging a hammer. Here's some stuff I've learned....
1) don't feel obligated to answer your phone every time it rings. Like my mom used to say - if it's important, they'll leave a message. Call back when it's more convenient for you. My phone greeting says "for a faster response, please text me". Even that doesn't guarantee an immediate resoinse. But you can quickly see if it's emergency level or not.
2) don't schedule walk-throughs (or estimates) at 10am, 2:30pm or such. People seem to have no concept of ruining a whole afternoon to load your stuff up an hour after lunch so you can drive 30 minutes to look at something. You'll find you're burning large chunks of your day.
3) if possible, give time windows for arrival, job completion time, etc. We're in a time when people want to schedule to the minute. But we don't know the future. Things happen. And nothing adds stress like telling someone you'll be done this afternoon, then something goes wrong. Also, when you're working for a remodeling company that has you busy, they're going to call you for surprise drop-ins to look at or fix something small.
4) know your capabilities as far as job size. If that large remodeling company likes you and your work, they'll start calling you for bigger, more important jobs. While that's great to have, it really REALLY sucks when it overloads you. If your average job is 3-5 days, and you're busy, you can't take a 4-week job. It's simply too much because you're still gonna get those other calls along the way.
And about the money....
5) don't live in constant fear of being taken advantage of. Trust God and trust people. In 20 years, I can count on one hand the number of times I got beat out of money. It will probably happen eventually, but not every day.