Bosch returned to South Africa earlier in 2026 after signing a three-year contract with the Bulls, following a two-year spell with Brive in France.
The 29-year-old was once seen as one of the brightest prospects in South African rugby before his career stagnated somewhat at the Sharks.
He revealed his time in France both revitalised his love for rugby and significantly improved his game.
"It's amazing to be back in South Africa. The two seasons I spent in France were really good for me, but there's just no place like home. Even Pretoria, for me, feels like home," Bosch said.
"I started becoming too comfortable at the Sharks. It was a safe space for me. I knew everyone, I knew the whole of Durban. Sometimes it is hard to leave that comfort, but it was exactly what I needed.
"It was so good for me mentally, just to get the shackles off and get back to doing what I do best, and that's just to play rugby. There's no sideshows, no distractions.
"I felt like I was a lot more free. The last couple of seasons in South Africa, I felt boxed in a little bit.
"That time in France freed me up, going back to almost how you used to play rugby at school. You see the space, and you play the space. That's when I'm at my best."
Bosch still has ambitions of playing for the Springboks and believes the Bulls' match against the All Blacks is the perfect opportunity to show what he can do.
"The day those ambitions go away, I'll stop playing rugby. My best will be good enough to make this squad," he said.
"It doesn't really matter what you say. It's what you produce out there on the field. Those actions will speak for everything else."