Patience and consistency over time.
I think as millennials we can sometimes neglect the importance of patience. Growing up in a world surrounded by instant gratification, it has become easy to experience fulfillment without any sort of wait or delay. Almost anything can be delivered immediately: information, groceries, laundry.
Jeff Bezos started Amazon in 1994 in his apartment. Today, we see Amazon as the behemoth it is now, without paying much attention to the 24 years of pain staking dedication invested.
“Big things start small. The biggest oak starts from an acorn. You’ve got to be willing to let that acorn grow into a little sapling, and then finally into a small tree and then maybe one day it’ll be a big business on its own.” - Jeff Bezos.