each one of the narrators think the garden is important to them because it resembles something. either it shows as, not wanting to take care of it, is being impatient or incapable. Wanting to do it may be because they have something they want to do with it, or maybe it reminds them of someone/ something. Kim, it reminds them of there father, for Wendell, it is changing things. For Gonzalo, it is learning.
Behavior can cause a lack of self-confidence by making people avoid situations where they would gain important knowledge or experience that often help confidence grow.