"For the one whom God sent speaks the words of God. He does not ration his gift of the Spirit." - John 3:34
It's important for us to remember the great things that God has done for us. Often we become consumed with our daily struggles and forget all that that Lord has done. We may also only focus on God not doing what we want of him. One of the blessings of the Holy Spirit is that the Spirit reminds us what Jesus said and what he has done for us. There is no limit to what God has done or what he desires to do in our lives.