Get a nice suit
It’s a common saying that you should dress for the job you want, not the job you have. Dressing professionally won’t make you financially secure on its own, but it could give you that slight edge you need to grab that promotion or a raise. If you have a job interview, you’ll want to invest in some appropriate attire even if the office has a casual dress code. You don’t need to spend a ton; a decent suit can be had for $200 or less.