We usually have two options.
1) Stay comfortable/safe by doing what we know, even when we recognize that we are capable of doing so much more.
2) Grow by trying new/challenging things. We might stumble along the way, but there will be no growth by staying within our comfort zone.
If you’re not making a conscious decision to grow/improve everyday, you’re subconsciously choosing stagnation. There’s nothing wrong with that if you’re ok with it, but if you truly want growth, you’ll have to work for it and get comfortable being uncomfortable.