I'm wondering if other moms feel as i do....?

now that my children are grown, 18 & 19yrs old. I find I have more free time, My girls are busy building their future, ...They dont need me like they use to, I'm no longer ashley's cl mom, or briana's team mom.... I was thinking.....Who am I.....now? What are my goals? what do i want to do with my life? I really don't know :/ I would like to know if other moms are facing a similar situation? if you feel youve lost yourself in mothering?