The hardest part of being a mother is guilt. The guilt of not being enough. As long as your kids know you love them, because you show them, you'd never ever leave them, you are giving it your best, they'll be ok.
You have a busy life, juggling work, home, friendships, relationships, kids, and you're so used to being all things to all people you've forgotten who you really are anymore. Learning about yourself - what you need, want and like, what really makes you tick is the first vital step to increased happiness, reduced stress, contentment and clarity. After all, if you don't know what your needs are, how can they possible be met?