12. Resolved, if I take delight in it as a gratification of pride, or vanity, or on any such account, immediately to throw it by.

This resolution reminds me of Psalm 119:37: "Turn my eyes from looking at worthless things; and give me life in your ways." The Psalmist's prayer wasn't 'turn my eyes from sinful things' (although that's important), but 'worthless things'. Edwards was resolved to not waste time on worthless things because worthless things are not life-giving. Think of the amount of time we spend on a daily basis engaging in worthless, temporal activities- really, audit yourself, I'll wait.

You could even put an excel spreadsheet together to breakdown your wakeful hours. When are you most alert during the day? When are you at your best? What are you doing when you're at your best? Are you investing in the worthless or the eternal? How much of your time is invested in that which is eternal? You've heard it said that 'where your treasure is there your heart is also' (Matthew 6:21). I'd add, what you spend your free time doing is where your heart is also.