If your eyes are open to seeing, you will eventually realize the limit of your desire, whatever that desire may be.
You can, through thought quickened by God, produce strong enough reasons to overcome any limit to desire, provided your desire is sufficiently aligned with God. The greatest suffering we know of is what Christ endured in condescending to earth and living as he did (see John 3:16).
He succeeded because he was willing to face the terrible truth that there was no other way to save mankind, and that no one else would do what he was willing to do (see Matthew 26:39).
Perhaps you don’t have any reasons for your desire. Perhaps it is an emotion, and you don’t know where it is from or on what it is based. You just know it is there. Your challenge in increasing that type of desire is still the same—you must develop and use your faculties of reason in order to discover why you desire this and potentially modify what you desire.
Always remember that desire is a sorted list. If you reach the limit in one desire, don’t overlook the fact that this means, by definition, you want something else more than the thing you are limited in your desire for. In other words, all of us already have infinite desire . The question is merely: in what is it placed?
The content and order of your list of desires isn’t likely to be immediately apparent to you because it is abnormal for most people to spend sufficient time introspecting or to have sufficient honesty to find it out.
The story of the rich young man who came to Jesus is a wonderful example of how, in seeking him, God will reveal the next thing on our list that we don’t realize separates us from him because we assign it a higher priority than we do him. To the best of his understanding, the young man had kept all of God’s commandments. He asked Jesus what else he lacked that kept him from eternal life:
21 Jesus said unto him, If thou wilt be perfect, go and sell that thou hast, and give to the poor, and thou shalt have treasure in heaven: and come and follow me.
22 But when the young man heard that saying, he went away sorrowful: for he had great possessions. (Matthew 19)
By revealing more to the man about what a desire for God required in action, the man realized that he actually desired being rich more than he desired eternal life. While wealth is one potential desire, it is not the only one, and this story would be just as valid if it were about any other desire— the desire to be liked by others, the desire to be comfortable, the desire to have it easy, the desire to avoid loneliness, etc.
If you want to increase your desire, you’ll have to find out what is on your list and in what order, and you’ll have to decide whether or not to change the contents or order of that list. It is up to you.
It is critically important to desire the best things. If what you desire is less than the best thing you can imagine, you will never do what it takes to obtain all that is available. In fact, desiring even the best that you can imagine is not enough.
We are plainly told that what God has to offer lies beyond our wildest imagination of what is good:
But as it is written, Eye hath not seen, nor ear heard, neither have entered into the heart of man, the things which God hath prepared for them that love him. (1 Corinthians 2:9)
In order to obtain all that he has, the limit of your actions must exceed what the greatest outcomes you can imagine would be worth. In order to obtain all God offers, you will have to achieve everything humans are capable of. This boundary lies far beyond what is worthwhile for the greatest outcomes you can imagine. This kind of faith requires complete trust in God.
If your faith were a set of monkey bars, you would get further by advancing to the next bar than you would by staying still, and further still by skipping bars as you continuously advance, but the greatest blessings of all are reserved for those who are willing to fling themselves towards the other side.
Paul said, “...he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.” (Hebrews 11:6) Those who have not yet attained complete trust in God can never rise to receive all God desires to grant them, because doing so requires you to walk through afflictions so overwhelming that their purpose can’t be understood prior to overcoming them.