We see that the Father is well aware that we do not always know how to pray as we ought. He has provided divine intercession for His kids so that there is always help in the time of need. To intercede means to plead or make a request on the behalf of another. So, the Holy Spirit prays to the Father on our behalf, making requests for us when we do not know how to pray. The Father knew there would be times when we would have difficulty knowing what to pray. He, therefore, made provision for those times.
In the fourth chapter of Philippians Paul tells us that we should not be anxious for anything, but rather to make our requests known to God (Phil. 4: 6). So, God would not have us be anxious or worried but rather take everything to Him in prayer. He desires to meet our every need. In His desire to meet our needs He has even provided for prayer to be made on our behalf when we are unable and has Himself promised to give us the words to say when we do pray. When we talk about God meeting our every need, it really means every. There is no need you have, no trouble that you have encountered that He has not already anticipated and provided an answer for. Go to Him in prayer but also thank Him for the Holy Spirit who makes intercession for you.