Big Question Discipline/s

So my big question was: "Is it too late do do anything."
To make it more in depth. the meaning of my big question is that say I have been majoring in nursing for 3 years, and just then realized how nursing sucks and wanted to change my major into a music major ? Is it too late ? What if I'm 65 years old, and I wanted to become a performer ? Is it too late ?

• People say "It's never too late." or "It's better late than never."
• Many people pursued their dream jobs at an old age