Blessing and cursing are very important Biblical principles. There are two ways of life, either under God’s blessing or under His curse. Emphasized in the Torah reading כי רְאֵה Re’eh (“see,” Deuteronomy 11:26–16:17) is we want to live under His blessing.
We live under God’s blessing when we read and apply Torah. When we screw up, we still apply Torah to deal with our screwups. We are under God’s curse when we refuse to follow Torah. We all have experienced how bad life is when we refuse to obey God and walk in Torah. God can’t bless us when we are walking in sin. He can only bless obedience. He teaches us like we teach our own children.