When you first started running, did you have someone who served as a running mentor for you? He or she may have given you information about recommended gear, running books, where to run, or the best races to run.
If you have some experience with running now and feel comfortable sharing your knowledge, you may want to adopt a new runner of your own. Offer your free advice to a friend or family member who's new to running. If they're looking for help (some may be just fine on their own), you can provide your newbie runner with some basic training advice and gear knowledge and, more importantly, much-needed encouragement.
Consider going on some runs with your newbie. Although running with him or her may not be challenging physically for you, watching a new runner get excited about running will help renew your own motivation to run.
Get more tips on how to help beginner runners.