I agree with you in regards to diet. Over the last 24 months I slowly, and with many stumbles, changed my entire approach to eating. A foundation of raw fruits and vegetables (carotenoids ftw) with higher protein and fat consumption. Avoiding sugars and carbs but not religiously. I was overweight to obese for 15 years it's like a new lease on life. That said about 10 months ago I started practicing mindfulness and meditation and I think that had the biggest impact on lowering stress and anxiety for me personally but lifestyle changes absolutely had a big impact. I wanted to chime in because a big part of my dietary transition was held in place due to rising food costs. YMMV but for me the produce section became much, much cheaper than all but the most bottom rung foodstuffs at the grocery when it came to packing lunch and snacks for the day, it also helped to really limit my meat intake so I actually replaced most of that with dairy (Greek yogurt, cheese, etc). I don't expect food prices to go anywhere but up over the short to medium term so I think supplements are going to really be worth looking at for a lot of people who want to nudge themselves to a better spot physically and mentally. But do not expect miracles, I've found a lot of my better health was so gradual in affect that it was only by looking back that I realized how much better I was doing.