I gotta have it! I can’t live without it.
Whenever you experience those urges, take a deep breathe and collect yourself. You only really need food, air, water, shelter, etc. You don't need the latest cell phone or other gizmo. I'm not saying you must live like an Amish monk; just remember that all technology is disruptive, so be cautious. Simply owning the latest and greatest gadget does not necessarily help your business.
You need to take your ego out of it and ask the hard business questions before you spend. Don't let a vanity purchase impact your ability to make money.