For me its a matter of discipline and being disciplined always helps, its a reflection of the quality of the work you produce.
Having said that, I would make the coding standard keeping in view the IDE and/or tools in use. Further, the IDE should be configured identically (e.g. each developersdeveloper's IDE should either be using all tabs or all whitespaceswhite-spaces for indentation and everyone's IDE should have the same tab length) for each developer so everyone can follow the standard easily...
Also, check-in scripts could be developed and used which may help in adhering to the coding standards to certain extent, e.g. they can fix the indentation before actually committing the checked in file into the version control system.