Freelancing, digital product sales, or blogging/content creation

I have tried two out of these but the pay is very discouraging. Adsense paid me $12 after one year, then I celebrated it because it was a proof that I can actually get paid from blogging. But the stress I put in for a whole year is way more than the money I got. Content creation looks good but the algorithm changes every time, in most cases it doesn't favour me. So, which one really paid you, and which one wasted your time?