Fix: While you likely can't fix the behavior of the person sitting next to you, at least you can ensure you aren't part of the problem. Simply make your default setting "ringer off." Turn the ringer on only when you know you're going to need to hear it ring -- that is, any time it's not in a pocket and out of arm's reach.
21. Never rebooting
For all their advances in reliability, our gadgets remain incredibly susceptible to minor bugs of all kinds. Memory leaks are still rampant in Windows applications, flooding your RAM to make it unusable. Numerous applications still require reboots after they're installed or updated, and the app will be stuck in limbo until that reboot occurs.
Windows 8 has improved reboot times (and reboot frequency), but every operating system -- whether desktop or mobile -- benefits from an occasional reboot. Think of it as a good night's sleep for a device: A reboot lets it start fresh, free of digital baggage. A reboot may improve your device's battery life.
Fix: Build rebooting into the natural downtime of your day, typically when you go to bed. Reboot your device to give it a refresh. Better yet, turn it off completely and save energy.
Bonus: Fix these bad email habits
Keeping a full inbox (clean it out!)
Treat your inbox like your desk, with only essentials you need at that moment. As for everything else, file it, delete it, or transfer it to the calendar. Some task management approaches favor "inbox zero" (making your inbox totally empty), but the "no-scroll" goal (all inbox contents on a single screen) is more reachable for many.
Responding to spam (don't!)
There's a difference between a mailing list or a promotional newsletter you signed up for and spam. The first you can unsubscribe from -- and you should, liberally -- the second you cannot. Use unsubscribe links for the former and invest in a spam filter for the latter. If spam becomes such a problem that you can't manage it, consider the nuclear option: changing your email address.
Answering instantly (think first!)
It's tempting to write back to an email as quickly as possible so you can get it off your plate (and out of your inbox), but doing that can create its own problems. Consider setting your email client to delay its send/receive operation by 10 or 15 minutes. This gives you the chance to edit a message, add something to it (so that there is no second message, thereby keeping down the overall number of messages that you're sending), and avoid the "I accidentally hit the Send button" goof-up. More critically, a delay lets the recipient know you took time to put together a thoughtful reply.
Replying to all (stop!)
One reason our inboxes are so full: We send so much email. Bob sends an email to a dozen people because he doesn't know who can help him solve a problem -- and those dozen people then reply to everyone. Use 'Reply to All' sparingly, and be certain every recipient on an email thread needs to read your response.