Boundaries are necessary to keep ourselves and our relationships healthy - without them, we can start to feel resentful as we can feel like we are not being seen or heard. Setting boundaries is a form of self-care, and means we can still show love and care to others without sacrificing our own needs.
Below are some articles with information and support;
BBC Tiny Happy People Article - How to set boundaries as a parent - from visitors to unsolicited advice
Calm App Blog - How to set healthy boundaries in relationships and How to say no nicely: 30 examples of saying no without regret
Positive Psychology - How to Set Healthy Boundaries & Build Positive Relationships
Papyrus - The importance of setting boundaries and saying no
Help Guide - Setting Healthy Boundaries in Relationships
Tiny Buddha - How to Set Better Boundaries: 9 Tips for People-Pleasers