Homesickness is not a condition you can avoid without causing some irreversible negative effects now or soon in the future. As a simple definition, homesickness is emotional distress that manifests when you feel disconnected from the familiar. This includes people, places, smells, and personal routine.
When you miss somebody, someone, or something bad, your emotional stability is fragile. When you suffer and experience emotional pain, every single aspect of your life will change.