If you want to be successful at something like Khabib Nurmagomedov has been in MMA, then you have to learn about and apply the power of routine.
You have to have the work ethic to support it, as Khabib emphasized in a recent Wahed Podcast episode:

You know, I was doing the same thing all my life. Stability, stability… If you don’t have stability, if you don’t recover between the trainings – you’re never going to become a success.

You have to train hard. Every day, you have to do the same thing.
You have to do same thing every single day. And [for] so many years, you have to sacrifice everything that you have.

It’s all been about continuity for “The Eagle”:

Guys ask me, like, how you become a good grappler, good top control, wrestling, conditioning…

I was wrestling every day, like one hour. Non-stop, one hour – can you imagine it? With new [fresh] opponents [coming in to train all the time], for one hour.
And then, when you finish, you go do some exercise; lifting, running, bikes, work with coach…

Khabib also emphasized the importance of recovery. For him, the most important thing has always been sleep:

And between trainings, you have to recover. A lot of people don’t understand what recovery is. A lot of people call it, like: massage, supplements… [But] for me, recovery is sleep.

Most important thing; between trainings, like, at least 2-3 hours. All my life, I was like daytime – I was sleeping. Like, from maybe 11 to 1, maybe 12 to 2, maybe 2 to 4…
You know, between trainings you have to sleep because you train so hard; morning for 2 hour and night for 2 and a half [hours]… You need rest.

Sloth Jiu-Jitsu: The Ultimate Guide for Calmly Beating Bigger, Younger Opponents

💥 What if slowing down was the fastest way to win? 💭 Tired of Getting Smashed by Younger, Stronger Grapplers? It’s not your age. It’s your strategy. If you’re a passionate grappler over 35 who’s sick of getting outpaced, outmuscled, or out-cardio’d by opponents half your age — this 120 page e-book was made for you. 🔓 Unlock the Power of Sloth Jiu-Jitsu:

Build Sustainable Strength—Without Wrecking Your Joints, Energy, or Jiu-Jitsu

Tired of waking up sore and burnt out after lifting? Sloth Strength is a proven blueprint for grapplers over 35 who want to get stronger—without the pain, burnout, or injuries.

Developed from 25 years on the mats, this no-burnout approach is made specifically for BJJ athletes in their 30s, 40s, and beyond.