A great post here from Wendy Alsup on mothers and Mother's Day.  Here's the core of it-

Single woman watching your biological clock tick away, I encourage you to look today at your longings through the lens of the gospel. You don’t have to deny your longing or talk yourself into a happy attitude for all the good things you can do without kids. It’s OK to mourn the loss. God said children are a blessing. But after the fall, we do not all get to experience that blessing. The gospel makes up the difference. While you are disappointed in deep ways and that disappointment is real, you will one day sit with Jesus in heaven profoundly content with His work in you through this disappointment. In heaven, you will have no longing for something you missed. You will not be disappointed. May confidence in that hope sustain you.

Married woman experiencing infertility, I encourage you with similar words. People can be callous with their words, especially in the church. But believe in confidence that God in this very moment loves you with a deep love. You may feel estranged from Him, knowing that He has the power to give you that sweet infant that He has given so many around you. It seems like He is dangling a desire in front of you, teasing you with it. But understand that unfulfilled desire is a tool He uses to give you even better things – things of Himself that you cannot know in easy ways. Believe in confidence that this time of waiting is not just a holding pattern with no discernible value, but it too is a blessing, albeit in disguise, as it increases your strength to run and not grow weary and to walk and not to faint. Wait on the Lord, dear sister, in confidence.

And mom who fails her children regularly (because that’s everyone else), preach the gospel to yourself this day. If you have any grasp on your reality, you are likely painfully aware of every failure you’ve made with your children. And maybe you are fatigued by the fears of future failure as well. It’s okay that your children expose your own sin to yourself. In fact, it’s the mom who doesn’t seem daily aware of her failures that most concerns me. Christ has made the way for you to be at peace. If you sinned against your kids, ask their forgiveness. If you are kicking yourself for your failures, preach God’s grace to yourself. Don’t learn to live with your sin – don’t embrace it with the attitude “that’s just how I am.” But don’t deny it either. Be honest about it. You sinned. You confess. God forgives. You get up and walk forward in confidence. It’s called gospel grace, and THAT is the legacy to leave your children.

(HT: Vitamin Z)