I exhort therefore, that, first of all, supplications, prayers, intercessions, and giving of thanks, be made for all men (1 Timothy 2:1). 

Interceding for others is something you do regularly, not when it's convenient, but as a ministry. You should be effective in changing other people's lives through prayers. If there's someone in the church who's not been very consistent and almost giving up the faith, perhaps due to intense trials and persecution, intercede for that one. You'll make an impact; you'll restore that life. 

The latter part of James 5:16 says, "...The effectual fervent prayer of a righteous man availeth much"; this is in the context of praying for others; he lets us know how we can be effective in changing other people's lives. The Amplified Version says, "...The earnest (heartfelt, continued) prayer of a righteous man makes tremendous power available [dynamic in its working]". When you notice some believers around you, who're not growing well in Christ, intercede for them. If you have relatives and friends who aren't born again, you should be interceding for them very strongly; don't take it lightly! Remember, the Bible says there's joy in the presence of the angels of God in heaven over one sinner that repents (Luke 15:10). 

Intercessory prayer isn't something you're casual about; it's heartfelt; that means your emotions are involved; you keep at it until there's a testimony. It could take days, weeks, months, but don't stop; keep praying, because the value of the one you're interceding for is the life of Jesus. Each one of us is as valuable to God as Jesus is. So, when you take up a matter concerning another believer, and you're praying, you're not wasting time; you're causing a changing in the realm of the Spirit. 

Sometimes, there could be people, who are carnal among us and may act foolishly; don't get angry at them; intercede for them instead. Fight for their souls, because Satan is the one deceiving them; don't let him win. Keep interceding for them fervently and passionately, praying in other tongues, until the Holy Spirit takes over the intercession with deep sighs - groanings that are too deep for words! "Likewise the Spirit also helpeth our infirmities: for we know not what we should pray for as we ought: but the Spirit itself maketh intercession for us with groanings which cannot be uttered" (Romans 8:26).

Prayer...
Precious Father, I pray for increased revelation, and understanding of your Word amongst your children all around the world! I declare that the Church abounds more and more in knowledge, and growing stronger by the grace of the Lord Jesus Christ. Thank you for the work of the Holy Ghost in the churches, all around the world, in Jesus' Name. Amen.