Are you really honest with God or do you tell Him what you think He wants to hear? That is a danger that many people fall into. They pray what they think they should pray instead of telling God how they really feel. If you want to be genuine and authentic, then honesty with God is absolutely essential.
Tell Him the truth. He already knows anyway. Why do we think we need to "butter God up" by telling Him what we think He wants to hear from us? I mean, really. He is God! Who do we think we are fooling? Our piously worded prayers when we are angry or dying inside lack authenticity and we know it. God does too. So why try to sound more spiritual and holy by the words we choose when we talk to God? The most holy and spiritual thing you and I can do is to tell God how we really feel. When we do that we acknowledge that He really does know us and that He really is the God who sees.
He can handle how you really feel. In Psalm 142 David says "I pour out my complaint before Him. I declare my trouble before Him." (v. 2) David demonstrates that God doesn't only want to hear the good stuff from us. He wants it ALL. So whether you are up or down, you can tell God all about it. I mean ALL about it. Don't fix it up and make it sound pretty for God. He can handle the down and dirty and when you are honest with Him about it, you are giving Him permission to really help you with your feelings and your situation.
Being honest with God will make you more able to be honest with yourself and others. This is what happens when we are honest with God. In the process of being honest with Him, we have to be honest with ourselves and when we are honest with ourselves, we will be more honest with others. To be genuine and authentic, "the Real Thing" in all our relationships and in the place of influence we are stepping into, we have to be honest in every area of our lives. If we start by being honest with God, the rest will most definitely follow.