Hi Kelly,
I know exactly how you feel! I was in your shoes about a year ago too. I was 33, have 3 kids (two of them being 16) and I didn't have any idea "what I wanted to be when I grew up". My husband works a lot of hours and I wasn't working much ( I waitressed on the weekends for some extra $). I felt like I needed to do more...I felt like a bum

. I can't tell you how to make yourself feel better, but what worked for me was to find a passion/hobby and turn it into a business. I began to feel better about myself and when the money started coming in from my "hobby" it made me feel even better! I know you said you have a business...great! If it's more money you need why not try and kick it up a notch to bring in even more money. Or if your passion isn't in it anymore look at other hobbies you might have and use your business experience to start a different successful company.
I wish you luck, and I just wanted you to know that you aren't alone
Becky