pull yourself up by your own bootstraps

pull (or drag) yourself up by your own bootstraps

improve your position by your own efforts.
A bootstrap is sometimes sewn into the back of boots to help with pulling them on. This idiom has given rise to the computing term bootstrapping , meaning the process of loading a program into a computer by means of a few initial instructions which enable the introduction of the rest of the program from an input device. We now refer to the process of starting a computer as booting or booting up .
See also: bootstrap, own, pull, up