You may have set up your LinkedIn profile a few years ago and just kept adding skills, experience, groups, connections, or authorizations. If so, it is probably time to erase. Make sure your profile is clear and precise. So, only list the skills that are related to your career goals. Just mentioning that you know Microsoft Word or you are internet savvy will not make you stand out.
Similarly, you may have done a job a few years but it will not be related to your present status. So, make sure your profile is mentioned in the present status. Also, Leave groups and remove connections no longer useful to you. The same goes for authorization, nobody is great at everything, so make sure that you only have quality approvals that will help you advance.