To get good at anything we must be instructed in the right way and the do it over and over again until it become natural and automatic for us. Similarly, if we want to have eat fruit off of a tree, the tree must first be planted, fertilized, watered and cared for for a number of years. We are also told that what we plant is what we will reap. In a similar way, to have the "fruit" of the spirit we must do the .... of the spirit over and over again until it becomes natural. On one level it is like developing good habits, only it is much more than that. We must stop fighting against and .... accept it in our minds. So, it is a combination of changing our way of thinking and our behaviors... (more to follow)
The message here is that fruit is the result of planting and much patient tending and cultivation over many years. It's not automatic, nor does it happen instantly. We might receive the desire instantly, but the fruit comes much later.