Putting yourself first isn’t always easy. My advice when it comes to putting yourself first is to start small.
Self-care is a skill that takes practice. So starting with something small and staying firm in your boundary is a good place to start. When you decided to put yourself first, you may get some pushback, and that is completely normal, especially when those around you are not used to you taking time for yourself. But I encourage you to keep your self-care time sacred, and when you honor that time for yourself, it expresses to those around your that taking time for you is essential.