Here "heart" represents the whole person. Alternate translation: "you should not regret it" or "you should be happy" (See: [[rc://en/ta/man/jit/figs-synecdoche]] and [[rc://en/ta/man/jit/figs-litotes]])
Here "put your hand to" represents the whole person and work that he has done. Alternate translation: "in all that you do" (See: [[rc://en/ta/man/jit/figs-synecdoche]])