Does Luke 17:6 Confirm Positive Confession?

Does Luke 17:6 Confirm Positive Confession?

 6 So the Lord said, “If you have faith as a mustard seed, you can say to this mulberry tree, ‘Be pulled up by the roots and be planted in the sea,’ and it would obey you. 7 And which of you, having a servant plowing or tending sheep, will say to him when he has come in from the field, ‘Come at once and sit down to eat’? 8 But will he not rather say to him, ‘Prepare something for my supper, and gird yourself and serve me till I have eaten and drunk, and afterward you will eat and drink’? 9 Does he thank that servant because he did the things that were commanded him? I think not.[c] 10 So likewise you, when you have done all those things which you are commanded, say, ‘We are unprofitable servants. We have done what was our duty to do.’” - Luke 17:6-10

 In Verse 7-10, there is an analogy of a Master and his Servant. To "eat and drink" is basically a reward at the end of the Servant's labour. To "prepare supper, gird yourself and serve" is basically a fulfillment THE WILL OF THE MASTER. Basically when Jesus is trying to say is, you don't ask for a reward before you labour in obedience (to Righteous Kingdom works). And if you serve the master before yourself, you yield to his will (Commandments). This is consistent with the attitude of praying according to HIS WILL, and not our own will. So the answer is "NO", you CANNOT POSITIVE CONFESS your way to whatever you wish for...

 True Faith in God is demonstrated by Jesus :
41 And He was withdrawn from them about a stone’s throw, and He knelt down and prayed, 42 saying, “Father, if it is Your will, take this cup away from Me; nevertheless NOT MY WILL, BUT YOURS, BE DONE.” - Luke 22:41