I'm not sure if I understand your question correctly but we food is something that will not always be there for us but it is something that we need and we crave. Food is useful in many ways and helpful. We need love because due to lonliness many have died by commiting suicide.
Answer:
I have learned that there are things in life that are essential to my health, and things that are not beneficial.
I have realized that some of the things I might be doing with my body could be harmful later in life.
I will apply the knowledge I have been giving throughout my years of education and my ongoing adulthood.