Get, etc. somewhere under your own steam
Definition 1 of 1
Pro Tip 1/3Self-reliance
This phrase emphasizes independence and the ability to do something without help. 
He insisted on fixing the car under his own steam, refusing any assistance.
Pro Tip 2/3Physical Effort
Often suggests physical travel or movement without mechanical aid. 
She reached the summit under her own steam while everyone else used the cable car.
Pro Tip 3/3Metaphorical Use
Can also be used metaphorically to mean achieving a goal without external help. 
He built his business under his own steam, without any investors.