Prayer is communication with God, so your prayer life is the amount and quality of time you spend with God. It is not you doing a monologue. It is taking time to be still to listen for Him to respond. It means that you are waiting patiently sometimes weeks, months, or years for your prayer to be answered. While you wait you thank God for what He has done and look for His answer to what you are waiting on. You do not forget and you trust Him not to forget.
When God does respond it may require you to do something. How will you respond to God? Will you take heed and obey? Will you say you have done enough and keep on the way things are? Will you reject it all together?
You have a hot prayer life if you view God as your closest and most trusted friend in the world. You go to Him about everything and love to hear what He has to say even if it goes against what you wanted Him to say. A cold prayer life is not having one or if you do it is a list of request, demands, or spouting off your grievances with Him. You don't care about what He has to say in return. Prayer is a last resort or an afterthought. Lukewarm is neither hot nor cold. You are self-sufficient and do not need God, but you claim to be Him. You are blind and naked, but you do not realize it. Your prayers are indifferent.
When you have a hot prayer life you know how to use it as a warrior. Your trust and faith turn you into a prayer warrior. You use prayer to do go, give blessings, and fight against evil. God provided you with armor if you are willing to learn how to use it to protect yourself from the unseen war that is going on around you. Prayer is your most powerful weapon.
The amount of time you spend in prayer and God's Word reveals how much you need Him. You are active in your prayer life even when life is good because you desire to be close to Him. You understand that you can't do this life on your own and that all the good things come from Him. He gives you grace when you did not deserve it because He loves you. Will you love Him in return? Will you humble yourself to grow in wisdom that comes from Him?
2 Chronicles 30:25-27, Ephesians 4:14-16, 6:10-18, Colossians 4:2-6, 1 Peter 3:7-12, & Revelations 3:14-22, 5:6-10