My interior design business began when I used to style and assist clients. I would do fittings in my home, which I’d got in the habit of redecorating practicaly weekly, and my clients started to ask me to do their homes. The rest, as they say, is history. When I think about how long ago I set up shop—nearly 20 years ago—I think, “If I only knew then what I know now…” I thought I’d share the most important things that kept me grounded and focused as I launched my own business. I imagine these do’s and don’ts would apply to anyone who’s starting their own business. Take my lead below.