Even when you have put in the work, even when you have learned the tools or the art of setting boundaries, there may still be circumstances and people that you struggle to create or establish healthy boundaries with. Keep putting in the work. Your mental health will thank you. You owe it to yourself to set healthy boundaries and protect your peace.
Boundaries are very good to have, but when it comes to people who have experienced trauma, that can be a challenge. I think it is important to reflect on where you are in your life no matter what age you are, and understand that things can always be better if you focus on what can make a difference for you.