United Kingdom, Aug. 11 -- Kellan Lutz became "stressed and desperate" in the pursuit of post-Twilight success.

The 41-year-old actor shot to fame playing Emmett Cullen in the vampire movie series and admitted he "lost" sight of himself and what was important as he chased high-profile roles and tried to change himself to fit in.

He told the Inside of You podcast: "There were times even post Twilight when I was, you know, going out for Captain America and Thor and the pressure was really, really on.

"I was like, I need to be so regulant and strict and do this and do that. And then I'd get so bummed on myself.

"I'm like, man, I lost me. I lost Kellan. I lost that light."

Kellan admitted he even began adopting a deeper speaking voice in...