Unless you're a genius or celebrity, your work will generally culminate in extinction. Don't even have to wait till death do 'em in, look at how many websites were deleted, projects abandoned, companies dismantled in the last 10yrs, as they fell to disuse & disinterest or lack of maintenance or superseded by superior technology.
How can you mandate that which does not exist? This isn't dwarf fortress.
Achieving something great in one’s career is good, but remember, we all have to die. And remember that all that we achieve will be left behind. Therefore what is real success? Success is not happiness, happiness is success. We have understood the equation wrong. We think achievement will give us pleasure and equals to happiness. We don't realize that we have to go beyond achievement to live a life of contentment and fulfilment. Real success is going even beyond that, it is living a life of Enlightenment, overcome ignorance, realizing the Truth, being liberated from all suffering. And being united with the Divine.