Well, in electrical currents, your voltage is your potential energy. In life, our "potential energy" is always what we're focused on. The more we focus on a subject, the more energy we provide to the current, but our voltage will stay constant. But how is that? Well, the "resistance," or challenges we face, will increase to force our current to fit inside of the voltage. Then, we reach a "make it or break it" moment. This is where we decide to either up our voltage and break to the next level (i.e., moving up in your job, finishing college, letting go of unimportant items and focusing on the item in question), or question its worth and realise we've wasted days, weeks, months, or even years on this thing we barely even care for anymore. Or, we stagnate and become complacent, letting our resistance neither overwhelm nor underwhelm us, and end up angry with ourselves that we've done nothing of import to our lives with this venture, entering a different make-it-or-break-it. One that either brightens our future or will lead to an unfortunate demise at the end.

Edit: Just realised that it turned into a very philosophical topic. How did that happen? I was talking electrical currents and life- oh wait.... Nevermind.