God is your heavenly Father and He wants to give you good gifts. Therefore, ask for blessings from God and believe that you have and will receive them.
Remember that you need to be asking according to the will of God. If you ask for selfish wants and desires then, of course, you aren’t going to receive them.
How do you know what God’s will is? Pray more, read the Bible, meditate on the Scripture, and pray according to the Scriptures. There are plenty of blessings in the Bible that you can pray over your life and the lives of those around you.
Referenced Verses:
James 4:3
Mark 11:24
Jeremiah 17:10
Luke 16:15
Matthew 7:9-11
Matthew 7:7-8