Oh sweetie...my heart aches for you. What you are doing as a SAHM is so valuable to your family and society.
It is great that you are venting here on this forum and getting some advice and a pick me up. But..do you have ladies that you can meet up with and share concerns,joys,frustrations and wisdom? It helps to find a weekly outlet with other ladies. I treasure my Tuesday walk with one of my best friends, my MWF ZUMBA class with friends and an occasional lunch date with friends.
Exercise helps beat these feelings and strengthens your mind,body and spirit. I whole heartedly testify that exercise is a mood booster!!! And, when I had little ones then I put them in a double stroller and walked,and walked and walked.
Make goals for yourself and find a hobby.
Let go of expectations you are putting on yourself that are making you feel overwhelmed. Keep your day simple...everyone needs to eat,be clothed and sleep. After that, do something each day for yourself. Something that will fill you up. I go sit in the sun with a book and a warm cup of tea. I garden. I surf the net for awhile. I do a craft or organize something in my home.
Your little one will start school soon. Chisel out some time to volunteer at her school. I volunteer for the Hospitality position. I enjoy throwing parties,baking and cooking. This position fills me up. I put on events for the teachers in their staffroom. I get to decorate and put on a yummy spread...and have a great budget to do it with. It is fun! I also get to interact with other parents and get to know my kids' teachers. Sooo, get involved. YOU have skills and talents that your school community can benefit from.
I don't think you need a job to make you feel valued. You need to find in yourself that you have value to offer others around you..not validation from others. Validation is nice...but you need to be happy with yourself when there is no validation. Strive to find confidence in what you are offering your family by being home full time.
Something else that helps me is every week I find someone to do something for. I send a note, make a loaf of bread or a treat or call them. Often when we serve someone else outside of our home, it gives us a great sense of purpose and self worth.
You give and give everyday in your home. Take your daughter with you to visit that little old lady down the street. Have your daughter draw a picture for the woman...and take some home baked cookies. You will teach your daughter a great lesson, it will warm your hearts and the person you serve.
You don't sound horrible at all. So many women beat themselves up all the time with these feelings. You are being honest...and that is a great step. Now...go do some things to lift yourself up out of this slump.
I personally am very fulfilled being home full time. It was our choice before we married and had kids. We have a vision of how we want our home life to function and how we want our kids raised and that requires one of us to be home full time. Turns out it is me because I love it and even though I have a degree, my hubby makes waaaay more than I could. Our home life flows so smoothly because someone has their finger on the pulse of home and kids full time. Yet, my hubby helps out a ton as well. I don't feel alone in it.
Something else that has helped me be secure with myself and roles is to not care about what others are doing. Comparing yourself to others steals the joy out of life. Don't worry about others who seem like they have it all, dress and look like a model or have Pinterest Perfect lives.
Be the M. your little girl deserves and the wife your husband deserves...and that is simply being a happy person who finds joy in being with them.
Also, you might need to go talk to a professional if a walk in the sunshine, exercise and setting some goals for yourself does not kick this slump. You might need more than these simple daily acts. And..that is ok. Having babies, being isolated, and getting older can play havoc on our body's hormones. You might need a doctor to run some tests to make sure that you don't need supplements.
Good luck and best wishes M. W from M. W :)