Die with your boots on

To "Die with your boots on" is an idiom referring to dying while fighting or to die while actively occupied/employed/working or in the middle of some action. A person who dies with their boots on keeps working to the end, as in "He’ll never quit—he’ll die with his boots on." The implication here is that they died in violence, as in gunfights or by hanging and didn't die of old age and/or experience of being bedridden with illness, infirmity, etc.