An infection is contamination by organism(s) that reside in the body or from outside the body. An infection does not always present with symptoms, when it is deemed sub clinical. At other times symptoms are obvious and may result in discomfort, distress or various degrees of impairment in usual functioning.
Thoughts, likewise, may show no symptoms of being potentially harmful when well managed. At other times however, they may cause irreversible damage, if allowed into zones they ought not be, like an untreated infection, with the infecting organism(s) going into zones they would normally not be found.
It is therefore needful to guard what thoughts are processed by the mind. A bit of concern about the future would help put plans in place as best as possible, towards a happier and healthier future. Excessive worry however would easily result in not being able to focus on taking the right steps towards what is desired,
Consistent effort in holding onto healthy thoughts and managing infectious thoughts, is needful for a healthy mind and a healthy life!
Healthy thoughts enhances healthy living!