Warning others of the consequences that come with too much success, Liam explained further:
"I felt like I was in a bit of a self-destruct mode because I knew it was going really well," he said. "The worst part of it is, and one thing I’d say to people getting into doing this sort of stuff is that success is the bit that will kill you, more than anything. When it’s not successful you just kind of work harder at it, depending on the person you are. But most of the time, the successful bit just scared the sh*t out of me and I wanted nothing to do with it.
"There’s no stop button, you’ve got no control over your life. And I lost complete control of everything and the last two years have been trying to take control of life back and understanding that it’s on me, if that makes sense."
Liam discussed further how the constant drinking was really affecting how he toured with the band as well.
"I went through a little bit of a stage when I was in the band where I was drinking really heavily and I put a lot of weight on and I didn't notice. I just didn't notice, because I don't know whether I was really drunk every day or whatever."
However, despite what Liam went through and the personal struggles he endured, he's in a really good place in his life now.
"I'm the happiest I've ever been," he said. "It took a long time to get to this place and I'm glad that I'm at this stage of my life now."
Liam isn't the first band member to dish on similar experiences.
Niall Horan recently came out and revealed that the boys would have killed each other if they didn't go on hiatus.
Speaking to The Telegraph he said, "It was incredible. But we got tired. Not tired of it, just tired out. I can never really remember any major bust-ups, just brotherly family nagging s****y arguments like that.
"But we were gonna end up killing each other. We all sat down on day, had a chat and it was like, 'We need to take a break, chill out and try something new'."
"I keep in touch with most of them. I think other people just want their space," Liam told Wired in September. "And also, you know, we worked together for five years. Some of us, we didn't really have that much in common except for that we had a job together. Now that we don't have that job together anymore, there's not really any real reason for us to talk that often. Which is fine. That's just the way people are, really."