Hebrews 11:6 "... he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him."
One of the major keys to living a blessed life is believing God wants to reward you. I know He is a rewarder because He has proven this to me over and over again in my own life.
You have to have the right image of God. If you believe He's out to get to you then you will never come to Him or trust Him or certainly never believe He is a rewarder and wants to bless you. I had the privilege of growing up with a loving earthly father so it's not hard to believe that my Heavenly Father is the same. It could be more difficult for someone who grew up with a harsh earthly father to believe that God loves them and wants to bless them. The key is to get to know Him. You get to know Him by spending time with Him in prayer and in His Word. (Romans 12:2) If you have a false view of God then find scriptures that talk about His love for you and meditate on them.
People say "I know God loves me", but do they really believe it? If you believe it then you can trust Him. When you believe He loves you, you can believe that He wants to bless you. When you are able to receive His love, you can receive everything else He wants to give you. When you know He loves you, you can trust Him in the wilderness because you know there is a promise land on the other side.
Revelation 4:11 says "for thou hast created all things, and for thy pleasure they are and were created." You were created for His pleasure and your purpose can be found in Him. You will never truly be fulfilled outside of Him. He is longing for you and longs to be gracious to you. (Isaiah 30:18)
He is a loving God (1 John 4:16) - so much more than you can imagine and He wants to lavish that love out on you. If your view of God is skewed because of a bad relationship or events that happened in your life, I challenge you to go to the Word and let the Holy Spirit reveal the Father to you. (John 16:13,14; Ephesians 2:18)
He wants nothing more than to fellowship with you, pour His love on you, and dump His blessings into your life. When you get a revelation of how much God loves you, your life will never be the same.