Questions about one's relationship to piano practice, motivation, etc, are questions about the mind - perceptions, beliefs, attitudes, etc - more to do with how your view and manage your life. The problem you present is a basic problem every amateur pianist, every adult student, has to resolve. The resolution is typically "to do the best I can", and not compare yourself to others. Spend some time figuring out whether you're willing to commit and invest some time and effort in piano. Find a teacher and insist they give you an honest assessment after 18 months.
"You can have results or excuses. Not both." - Arnold Schwarzenegger,
If you want to stay on the fence, listen to the great pianists and dream, then checkout facebook, perhaps "Adult Piano Learners" group. People here are quite committed.