Is "blunder their way through lives " "You live a life always making mistakes"? Is "through'" from start to end or all the way through?
ex).....Recently psychological experiments showed that understanding the emotions of oneself and others is the key to a satisfying life. For example, those people who are self-aware and responsive to others manage their affairs with wisdom and grace, even in adverse circumstances. On the other hand, those who are emotionally illiterate blunder their way through lives marked by misunderstanding, frustrations, and failed relationships....
blunder - definition. American English definition of blunder by Macmillan Dictionary
to move or progress in a careless way, making mistakes or creating problems as you go
blunder about/around/into: The book tells the story of how Europe blundered into World War I.