Thy will be done!

Prayer is not asking God to accord our will. Most of the time our will may be in conflict with that of God. Prayer is surrender to God's will. Somewhere I read this definition of prayer: 'Prayer is an offering up of our desires unto God for things agreeable to His will ....”
It is not just asking for things that we want in our lives but surrendering our desires to God that he may grant whatever is agreeable to his will. His will supercedes everything.
The Lord's prayer goes on to qualifying God's will as, '... as it is in heaven.' God's rule in heaven is unchallenged. However, it is challenged and resisted here on earth. Our desires are not always in line with God's. The devil has mastery over this world at least for  now until Christ subdues him. His will is also at work. Moreover, he tries to bring our hearts in line with his. So, we struggle not knowing which is God's will and which is not.
The best way out of this is to pray that God's will be done in our lives as it is done in heaven where it is unchallenged. Thus it is a total surrender to God's will.