The discovery of innocence is it's loss.
–Neri Oxman
The brighter the light, the more crisp its shadow. There's a dark side to everything, including growth. When you choose to change yourself (or the world) the glow of progress will cast dark shadows that might bring you to hesitate. Do not fear. This is the dark side of growth.
Growth can feel solitary. If the people in your community don't share your need for change, you might find yourself walking alone. Addicts experience this in recovery. Not only do you "break up with your dealer," you often leave behind a peer group that reinforces an obsolete version of you.
And in this way, growth is destructive. The birth of a new you (or new world) hastens the death of another one. The old version isn't evil, it is merely darkness you have exposed to light.
Paradoxically, the more light you shine the more darkness is revealed. Growth is a path to even harder challenges. Life never gets easier. How could it get harder than learning to chew solid foods, you ask? But then you face calculus, and heartbreak, and eventually death.
That is your reward for growth. Good luck.