It starts with something insignificant. Clumping together white stuff in seemingly endless supply. Little by little, we add mass as we diligently keep at it all the while increasing the potential energy. (mass x height).
Finally, when this ball is too big to move, we just roll in down the hill. This point of critical mass puts into motion an effortless accumulation so large it can start an avalanche and change the face of the world.
Your contribution works the same way. It might seem insignificant now. Keep at it long enough, and all you need is the right edge to push it over.
Don’t underestimate the power of small changes consistently applied over time.