Normalize saying NO without needing to over-explain yourself.
If someone is offended by your boundaries, that's their problem. The best weight you'll ever lose is the weight of other people's opinion of you.
Discussion
Absolutely, every no is a yes for something more important. And every yes is a no to something else. Know your priorities and act like them.
When you worry about what other's think about you, you just lose your meaning.
It has been so long since I cared about what others think about me I can barely remember the feelings anymore. My life has so much less stress now I don’t know how people live like that.
I have also been trying to practice radical candor as well and while some people don’t like it at first over time they seem more relaxed around me as they realize there is no hidden meaning in my words and that I speak the truth.