This is the very verse that I strongly felt God spoke to me about before and ever so again about the power of prayer. A prayer, stated in Wikipedia, is a direct approach for man to appeal to God to grant one's request; be it financially, in studies, health, relationship, family, personal or even for another. However, it should not be taken that prayer is like genie in a lamp; there's no "more efficient" or "better" way to pray so as to achieve the desirable results. On that, praise God that there isn't any fix way to pray for that will seriously contradict and undermine God's own limitless creativity and power.
I'll like to point out that even with prayer, one must be active to hold on to God's promise: praying for a new job but not sending out resume or praying for good results but not studying. God want to bless us and prosper us, but we have to give God things to work with! Another important point about prayer that is to believe that God has/will listen to our petition and will fulfill them in His timing. As human, we tend to rush and want instant results, but God is the unmovable and the omnipotent God, He sees the future and know what's best for us at that very timing/season of our life.
Praise the Lord for my Lifegroup, D2, whose precious individuals were handpicked and placed together by God to grow and nurture us as unique characters and as group of Christians in this season. One area that I'm thankful for is the readiness of the group to pray and to intercede for one another, be it in the area of health or studies etc.
One occasion whereby I've taken ill in the middle of the night but had a major report to be handed in the next day. SOSes (sms) were spammed to my lifegroup asking for prayer for healing and for His divine wisdom to handle the report. Within minutes, I received 2 replies (MX & Pari) with prayers over those areas. As I struggle to stay awake, in pain and at the same time trying to use the reminder brain cells to work out the report, I had to keep reassuring myself that God is in control and that I'll be made well and my report will be good.
And indeed, our God heard and answered our prayer; not only did I manage to finish the report that very night, I actually became well within just 3hrs of praying. This happened again the following day during a prayer meeting where I felt nauseous and a group laid hand on me; recovered even before the prayer meeting was over.
In two days, God's power were shown to me twice. Demonstrating His authority in heaven and on earth, that He can easily cause illnesses to flee at His command and that He can use whatever remaining brain cells to work out a miracle in my report. Praise the Lord. I thank Him for allowing me to experience these miracles and to stand witness to Him, the God Almighty.