Ask and it will be given to you; seek and you will find; knock and the door will be opened to you. 8 For everyone who asks receives; the one who seeks finds; and to the one who knocks, the door will be opened. – Matthew 7:7-8
Jesus’ command in this passage ought to give us great confidence and faith in prayer knowing that when we ask in prayer and present our requests He will give what we ask for and we receive His answer. In fact the mere act of spending time alone with God in prayer there’s already great blessing and reward.
But when you pray, go into your room, close the door and pray to your Father, who is unseen. Then your Father, who sees what is done in secret, will reward you. – Matthew 6:6
Therefore – ask for all kinds of things that are good and pleasing to the Lord (in accordance, of course to His will). Ask in prayer often, always, and unceasingly with thanksgiving.