To be honest, it is easy for people to say 'Do what you love and you will never work a day of your life'. You think that you love music and if you become a musician, life will be a bed of roses from then on? Like, a Taylor Swift or Rihanna or whomsoever never faced a day when they thought of abandoning what they were doing and running away? Composing music in your attic (Well, you know, businesses start in garages but the arts somehow gravitate to attics) is one thing. The business of putting together an album, getting someone to take you to the world, doing concerts and so on and so on...NOBODY does ONLY what they like. The moment you try to make a living out of ANYTHING you invite in a whole chunk of things that you'd rather not do, along with what you love doing.
Tiru has this to say for those times when you want to run away...
Vinaikkan vinaikedal ombal vinaikkurai theerndaarin theerndhandru ulagu - Tirukkural
Abandon not your efforts midway; the world abandons those who abandon their work - Loose Translation
To conceptualise something is one thing. To dream of implementing your concept is another. To actually implement it...that gives you experiences that you are seldom prepared to face. Like, with the music metaphor, you compose and when you dream of putting it out, you do not expect to sit with agents and music labels hammering out contracts. You do not expect your guitarist to get temperamental on the day of the concert. In dreams, things are all smooth, people love your music, nobody tries to cheat you on your royalties, no obscure chap sues you for plagiarism...you get the picture. Any or all of these can happen AND if you give up because of that, you are not ever going to be the face on the billboards.
It is not only a story for celebrities. It may be a matter of putting together a stall in an Industry exhibition or a project report for a new venture or your own attempt at, say, learning AI. ANY venture should be thought through BEFORE you attempt but not abandoned midway unless as a last resort. (Be sure that it IS the last resort) There are many who do not make anything of themselves because behind them lies a litter of half-done things which are never carries to completion.
Remember, you are a serial entrepreneur ONLY when your past enterprises have been carried to completion; not when all you have is a series of half-done and abandoned projects behind you.