LPT: Spend money where you spend time.

Most people tend to invest in things that give gratification in their downtime but neglect things that would improve their overall life.

1. You should spend about a third of your life sleeping so spending money on a good mattress is a no brainer, this will make your entire life better.

2. You'll likely spend 40 hours+ a week at work so spend some money in making that a little less shit, i invested in a good pair of headphones and a standing desk, so feel free to get whatever brightens your day.

3. Where ever you spend the next majority of your time throw some money at it, for me it was driving, so I upgraded my car sound system.