Prayer is our communion with God, whether it be a petition made to God, worship, repentance, praise, or thanksgiving. It does not have to be a laid-out patent prayer, but words from the heart. God wants all of us, he knows our minds and hearts, so why not talk to him as if he already knows the situation.
James 5:16 Confess [your] faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.
The effectual fervent prayer is one with power behind it, one that produces results. We have to believe what we pray, not just mouth words. Sometimes we go blindly into our prayers, not knowing in which direction to go.
Mark 11:24 Therefore I say unto you , What things soever ye desire, when ye pray , believe that ye receive [them], and ye shall have [them].
Desires of the heart should be those that will glorify God, not necessarily the human desires we have to make our life better.
Matthew 6:7 But when ye pray , use not vain repetitions, as the heathen [do]: for they think that they shall be heard for their much speaking. 8 Be not ye therefore like unto them: for your Father knoweth what things ye have need of, before ye ask him.
God knows each thought we have, so why not go to HIM and talk with him as you would if you were to meet him on the street. Prayers do not have to be long, drawn out affairs, but we need to be precise in what we are asking, and ask according to the bible rather than asking blindly for what we want. If it glorifies the Lord, then it will be something good for us. If it does not, then we should not be asking for it in our prayers.