all the above! also i'm not a dr, just saying what worked for me. fwiw i've lived with clinical depression for over a decade so i got to a point where it was manageable-ISH during episodes but for me that meant just going to class (sometimes) and brushing my teeth. i got really sick of it esp w other major life plans coming up so i threw myself into it. i changed the type of therapy i was doing (talk therapy was ineffective FOR ME, i found i do best with dbt and brain spotting with a therapist
that also specializes in internal family systems). i started seeing a functional med dr for hormone regulation and major parts of the program involves nutrition, brain retraining, and teaching your nervous system to feel safe. also movements that simulate the bilateral/repetitive movement of emdr helped me a lot (running/walking) and during days where i just don't have much energy, i go for a trail ride on horseback (ik not very accessible, just sharing what i do) or literally just sitting
outside in the morning sun for at least 20-30 min when i wake up and force myself to drink some water and eat an easy snack (i prefer sardines, dehydrated sweet potato sticks, even chicken nuggets lol. fed is best yk), even if i plan on getting right back to bed. it's also supposed to help regulate cortisol levels
and journaling! practicing gratitude, the kinetic movement of writing down your thoughts, etc. helped me a LOT. and if you're in a park, sketch your surroundings! in the same stretch i really enjoy meditation even for just 5-10 min. sometimes i just sit there and think if i don't have energy to journal. and for me i always struggled a lot with extreme self-criticism so i started just kinda forcing myself to accept whatever even the negative thoughts and i eventually noticed i stopped thinking
those negative thoughts about myself as frequently/severely. trying to combat it with forced positivity wasn't helpful for me cuz i was still seeing the negative as a punishment. for me, if i thought something like "that was so stupid of me, why am i ____" i would consciously choose to think "so what if i am? i still like myself" it doesn't mean the negative thought is TRUE, for me it meant that i didn't need to earn acceptance from myself, it was only to like myself for just being myself