How real can we be with God

The answer is very real as per Psalm 142 (Psalm 42 also very good). We get so caught up in thinking we have to put on a performance when praying. May as well be real because he sees it all anyway. My grandfather left a great impression on me of how to pray as he did it so conversationally and authentically.   

A maskil^[b] of David. When he was in the cave. A prayer.

¹ I cry aloud to the Lord;
    I lift up my voice to the Lord for mercy.
² I pour out before him my complaint;
    before him I tell my trouble.

³ When my spirit grows faint within me,
    it is you who watch over my way.
In the path where I walk
    people have hidden a snare for me.
⁴ Look and see, there is no one at my right hand;
    no one is concerned for me.
I have no refuge;
    no one cares for my life.

⁵ I cry to you, Lord;
    I say, “You are my refuge,
    my portion in the land of the living.”

⁶ Listen to my cry,
    for I am in desperate need;
rescue me from those who pursue me,
    for they are too strong for me.
⁷ Set me free from my prison,
    that I may praise your name.
Then the righteous will gather about me
    because of your goodness to me.