The same thing gets us stuck at every stage: a sense of personal inadequacy.
People get stuck at Stage One because they always feel as though they are somehow flawed and different from others, so they put all of their effort into conforming into what those around them would like to see. No matter how much they do, they feel as though it is never enough.
Stage Two people get stuck because they feel as though they should always be doing more, doing something better, doing something new and exciting, improving at something. But no matter how much they do, they feel as though it is never enough.
Stage Three people get stuck because they feel as though they have not generated enough meaningful influence in the world, that they make a greater impact in the specific areas that they have committed themselves to. But no matter how much they do, they feel as though it is never enough.8
One could even argue that Stage Four people feel stuck because they feel insecure that their legacy will not last or make any significant impact on the future generations. They cling to it and hold onto it and promote it with every last gasping breath. But they never feel as though it is enough.
The solution at each stage is then backwards. To move beyond Stage One, you must accept that you will never be enough for everybody all the time, and therefore you must make decisions for yourself.
To move beyond Stage Two, you must accept that you will never be capable of accomplishing everything you can dream and desire, and therefore you must zero in on what matters most and commit to it.
To move beyond Stage Three, you must realize that time and energy are limited, and therefore you must refocus your attention to helping others take over the meaningful projects you began.
To move beyond Stage Four, you must realize that change is inevitable, and that the influence of one person, no matter how great, no matter how powerful, no matter how meaningful, will eventually dissipate too.
And life will go on.