Isaiah 57:10 - Matthew Poole's English Annotations on the Holy Bible

Thou art wearied in the greatness of thy way; thou hast not eased or relieved, but only tired thyself with all thy tedious journeys and laborious endeavours. Yet saidst thou not, There is no hope; and yet thou wast so stupid under all thy discouragements and disappointments, that thou didst not perceive that thy labour was lost, and that thy case was not mended, but made worse and desperate by these practices. Thou hast found the life of thine hand; thou hast found (i.e. thou falsely imaginest that thou hast found, or shalt assuredly find by these courses) the life (i.e. the strength and rigour) of thine hand, that thine hand is strengthened by these practices; or, life by thine hand, i.e. by these endeavours and applications of thyself to others for help. Or, thou hast sometimes found success in these ways. Therefore thou wast not grieved; therefore thou didst not repent of thy sin and folly herein, but didst persist and applaud thyself in such courses.