For many actors, appearing or starring on a sitcom can be the thing that finally launches their career.

Take the entire cast of “Friends,” for instance.

Yes, there are quite a few TV stars who haven’t been spotted since their sitcoms ended.

Frankie Muniz smiling

So, what happened?

Why have they not found another successful show or project to continue their streak?

As she said, acting is competitive.

Jenna Fischer, The Office costars

But after the sitcom ended, Brown’s career came to a halt.

Brown entered a treatment facility in Texas to address his addiction problems.

Brown spoke toThe Christian Postabout his experience atRise Discipleship, a faith-based rehab treatment facility.

Orlando Brown smiling

“I can tell you that I’m [okay],” he said.

“I’m alive.

I don’t see a reason to revisit it, that’s just my opinion,” he explained.

James Michael Tyler smiling

“Some people think NBC never really promoted us.

But my answer to that is, ‘They kept us on the air.’

Ultimately, I will be forever in debt to NBC.”

Jim O’Heir

And this was something she made a conscious decision about.

“I was approaching 45,” she joked about “aging out” of acting.

But what is Muniz doing now?

Portia de Rossi, Ellen DeGeneres

Instead, Muniz has faced some serious health issues and dabbled in other career choices.

But Muniz remains positive despite all the issues he’s been dealt.

“Actor, race car driver, drummer.

Frankie Muniz

I got to do all these great things and it’s because I have drive.”

Additionally, it seems that Muniz isn’t too concerned about making a name for himself in Hollywood anymore.

In fact, you probably haven’t seen her since the show ended.

Nicholle Tom smiling

“I’d like to do a suspense thriller.”

Tom continued, “It’s exciting, and sad, it’s everything wrapped into one business.

I wouldn’t want to do anything else with my life.”

Erik Per Sullivan

After “Malcolm in the Middle” ended in 2006,Sullivan continued actingfor a few more years.

Additionally, Bell changed his last name to Campana, which is Spanish for Bell.

In an interview with Esquire, Bell or Campana explained that he always had an affinity for Spanish culture.

Drake Bell

“I think it’s just f**king boring,” Sprouse said.

I think it’s also too conceited, truly."

However, Davidson would never really find the same level of success as she did on that show.

Dylan Sprouse

“At the moment I am creating a show that is a comedy,” she said.

“I’m choosing to go back to my roots.

Either way, my goal is to always give the audience something to feel.

Amy Davidson smiling

Sometimes you oughta laugh and other times you need that emotional release.”

The show followed the Duncan family as they adjusted to the newest member, Charlie, played byMia Talerico.

“I think it was really easy because most of the time, it was what happened.

Mia Talerico

“And it was difficult.

She was facing a personal battle that would end up signaling the end of her acting career entirely.

“Anorexia is a mental illness,” she said in aninterview.

Jennette McCurdy smiling

“It’s something that you carry the effects of with you for the rest of your life.”

Pomers also clarified that thoughshe was done acting, she still pursued creative outlets.

Scarlett Pomers posing