If I were to suggest two ways that could truly amp up your confidence, they would be these:

Say what you mean. Not "yes", if you don't want to. Not "no" if you really would like to. Do you want to see someone again? Tell them. Do you want to ask someone to partner with you? Ask. Awkward is okay. And it's temporary. Confusion over mixed messages or regrets after lost opportunities,though, can last decades.
Act in a way that shows the world what's important to you. This is your paid work, your volunteer work. It's your parenting, the way you treat the bartender and whether or not you try and negotiate a deal on furniture at TROSA. When you act in accordance with your values, you attract a certain community i.e. not everyone that is thirsty to support you.

Both of these tools help you break outside the mom box, into a mold that's completely you. I am not perfect. You know as well as I do the high costs of that shitty path and I don't know about you, but I'm not going back. I mess up all the time. But my life is a series of practices, not attempts at perfection, that reinforce the mold of awesome that I'm in. And that's better than the pinched corners of a box that doesn't fit any day.

That's it. So, you can pick two...or one. Or none. The choice is yours. And it's free. Bonus.