A few things off the top of my head...
-Trust and talk to God.
-Fixed your eyes on Jesus.
-Find your identity in Christ.
-Don't carry shame or guilt, allow God's forgiveness into your heart and take away the burden of shame and guilt.
-Surround yourself with God fearing, Bible believing, Jesus loving Christians.
-Take care of your body.
-Teach your child/ren biblical truth. Be an example of Christ through words and actions.
-Be gentle on yourself, challenges inevitably happen, God will hold you and guide you through them.
-Know your child/ren, likes, dislikes, triggers etc.
-Pray for godly mentors for a child if the opposite gender as you. (As well as same gender if you want) Sometimes a single mum may need help with certain things when raising their son and same for single dad's raising daughters.
-Let your yes be yes and your no, no. Too often I see parents give in because of tantrums.
Blessings.