When looking for a guide or some sort of way to pray, a good method is to simply use Bible verses as a starting point and adding into them to better fit what is on your heart at the time. They are often good examples for our own prayer life. Take Psalm 103 verses 8 through 12, these verses are good foundations for this practice. You can use this as your prayer for the day or find a verse that may suit your current situation better.
Lord you are compassionate and gracious, slow to anger, abounding in love. You are all powerful, You give me the air that I breathe, and the water I drink. You give me the Ground that I stand on and the roof that shelters me. Let me be mindful that your mercy is infinitely more than your anger, and you will not treat me as my sins deserve or repay me according to my sinful nature though I am attacked daily by the temptations that seek satisfaction in me committing sin, and constantly fall into the trappings of my own desires (here is where you would take a moment to confess of the sins that you struggle with), please remove me of my sin and separate me from them as far as the east is from the west. Lord use me as your servant to further your Kingdom so that others may know of your love that spans as high as the heavens are from the earth. Amen
While not always the perfect method for any situation, this way of finding a framework in scripture can alleviate the challenge of creating a prayer. Hopefully you can use this method to get a foothold as to what you want to say in your time with God.