Boundaries are something that isn't talked about much within Christianity, but they are necessary. There is a lot of people doing things because they want to be accepted or they are afraid, but God calls us to follow him and not man. I hope this sermon will help you to set good, positive boundaries and that it will strengthen your walk with Christ.
Cloud, H., & Townsend, J. (2017). Boundaries Updated and Expanded Edition: When to Say Yes, How to Say No To Take Control of Your Life (Enlarged ed.). Zondervan.