Every image requires its own level of optimization; some will simply need tweaking in terms of, for example, contrast, others may require a lot more work.
Even if you think you have a duty to do everything possible, in the real world there may simply not be enough time to work on every photograph. In any case, optimizing is subject to the law of diminishing returns—lengthy tweaking of details may not have a significant impact. Nevertheless, the recommended procedure for a full optimization is as described here. Remember, however, that this is not cast in stone, but just an example of one reliable sequence.
A Raw adjustment ...