You are as much serving God in looking after your own children, and training them up in God's fear, and minding the house, and making your household a church for God, as you would be if you had been called to lead an army to battle for the Lord of hosts.
The calling of motherhood is a noble call and one that you should count with all seriousness. We aren't just playing a game, babysitting children but we are molding them in the Word of God to one day fulfill what God has for them. Drown out the negative voices that want to drag you down and think that motherhood is nothing of value. Instead, embrace the positive words of God as He fills His Word with praise for the virtous woman who makes sure her house and children are all well taken care of.
Love your children. Train them. Teach them God's Word. Don't let anything or anyone make you doubt for even a moment that your calling as a mother is somehow meaningless in this career-woman centered world. You will have a hand to reach out to on your death bed, a hand that will, hopefully, say, "Thank you Mom for being a good mother!"
Cherish those little ones and enjoy the blessing(s) that God has given you. Realize that you are fulfilling your calling and give your all to being a mother. Do it as heartily as you can, serving God through the hands that touch the future generation. Proclaim the goodness of motherhood, drown out the foul cries of those that mock it. Good can overcome! Positivity can drown out the negative! The hand that rocks the cradle, truly does rule the world.
You can shape the future by sharpening the arrows that God has given you. Leave a legacy that your children will never forget. You have the opportunity to raise children in the fear of God to one day be used for His ministry. Oh mother, lift your head up! Rise up and fulfill your calling! Now is the time to be that mother you know God wants you to be, he will use you to raise the next generation! To be used as the master's tool - no, there is hardly a greater calling as being a mother. Mothers produce men that one day become great preachers and reach others for God. Mothers bear those who go out into the mission field and share the gospel where it hasn't been heard! You, by extension of your children, have reaped the harvest. Sleep on that tonight and don't let anyone tell you that what you are doing is drudgery - oh no, it is heavenly!