Since I'm sincerely interested in advancing human progress (as scientist), the majority I do serves me to become the best at my job.
Networking. Finding a variety of people from a variety of fields that help me create an environment of growth and positivity. With whom I can safely share ideas and collaborate with. That can help me when I encounter a professional problem out of my expertise. And some ppl that help me deal with the psychological frustrations that come with research.
giving my all at my job. I want to become an expert in my field. I'm working almost every day for a majority of the day. I need to be very careful to not burn out though, and when planning my week I enforce times of relaxation everyday where I'm taking care of myself (skincare, haircare), exercising, eating only high quality food (plan my budget for this) and I try to get 8 h of sleep every day. When the times are less stressfull I relax on the weekends either gaming, doing some arts and crafts, making music, "gardening" (my potted plants lol) or socializing with my long time friends, friends outside my field.
investing. I have well enough expertise in my field to judge the potential of start ups and I was able to aquire some shares of strongly growing companies.
applying to every scholarship that just slightly fits my profile
learning programming (not quite there yet, though, but it's getting better). My field (Bio sciences) is increasingly computationalized. I do not want to fall behind the curve. Also the pandemic has shown that having programming skills is a great back up plan for when I can't work in the lab. Might be useful in case I decide to have kids, too.
Putting myself out there and (subtly) communicating my values/morals with every person I work with. Being extroverted and socially proactive. I was in a very messy breakup with my ex and he managed to manipulate my university colleagues, who didn't know me too well, because my ex was the one I used to hang out the most with, into thinking that I'm running after him/stalking him, lying. Because they didn't know me, and I was kinda awkward from the get go and they got to know me when I was increasingly approaching my lowest point due to the crumbling relationship with my ex, they just believed him and never asked/cared for my side of things. Every action I took or word I said he made about himself or was perceived in the relation to our breakup and me not being over him yet, when it was not. It was a psychological hellhole. When I was finally able to start from new in a new country I had psyched myself up to be the most charismatic version of me I could be and made a lot of new friends in the process. It is an preventive self-protection that I would recommend everyone.