Moms are held to a higher standard than other women. We are supposed be all about taking care of our family and putting everyone else first. This is a difficult thing to do all the time. Many people do not leave room error. Moms do not have super powers that make them less vulnerable to everyday life. They are going to be times that they will need to put themselves first.
Being a mom does not mean that you have to completely lose yourself entirely. You are going to have a desire to put your family first in most cases, but that does not mean that you have to do this all the time. It is okay if you make time for you to do things that you enjoy as well. You do not have to go to every event that your child may want you to as long as there is going to be someone there for them like a grandparent. Sometimes that can even be more fun for your child to share an event with the rest of the family that may not get to see them very often. Children love being the center of attention sometimes.
If you are a stay at home mom you may find it even more difficult to distinguish yourself from your children, then is when you need to look back at the things that you used to enjoy. Take a look back at the past and see if your interests are still the same. If they are not, then start looking at new things that might interest you and get involved.