Hi
There is a twelve step anti-depression programme. Sorry - can't link to it as don't know how to bring up a second window on this computer, but if you google 12 step programme cure depression it should come up. Although ADs is one of the steps - the others are really worth trying out. It's pretty thorough and I'm trying it at the moment as I really want to taper Ads down to nothing - fed up of the side effects.
One thing it suggests is a need for a high level of omega 3. I take a 1mg supplement every day now. That's also very good for ttc (allegedly makes babies' brains more capable) so no harm in doing it.
Exercise 30 mins minimum every day - enough to raise heart rate.
Spend at least one hour outdoors in direct sunlight.
At the end of every day, write a gratitude journal - just make a list of things you either enjoyed that day, that made you happy or laugh or that you feel grateful for.
The first three steps help boost the brains happy chemicals such as serotonin. The last one is like CBT - just help progamme the brain towards happy thought.
Also heart coherence which is something so simple and I've found it immensely helpful. As soon as you feel anxious, angry, nervous - any negative feeling, breathe in slowly and deeply, visualising the breath expanding your heart and making it buoyant. Just two breaths whenever you need them.
Some people also swear by tapping therapy/acupuncture etc. Worth a shot.