Not to be a contrarian considering you said everyone has a unique answer, but I'm seconding
>>800945. The most "effortless" and efficient way to build up any kind of skill is to slip it into your daily schedule in small increments. Five minutes of exercise, five minutes of learning that foreign language, what have you. Get into a routine and make it consistently around the same length and time of day. Pretty quickly you'll begin to instinctively put aside time for that activity without forgetting about it or having to force yourself.
I also agree with his statement on finding "meditative" time to yourself. Back before Corona-chan robbed me of my job, I used to walk to work and back every day, and would use these very long (30+ minutes) walks to rethink my current "direction" in life - my goals both long and short term, reflecting on how successful I've been at previous ones, preparing a schedule for the next half a day, ect. - or just to zone out and listen to music or listen to the area around me (city or woods or what-have-you). The particularly relevant part to the question is that "direction" rethinking, but in general it's a good destresser. It has other benefits too, like helping you familiarise yourself with your area, possibly meeting new people, getting more comfortable leaving the house/area you frequent. I also tend to do this while jogging but I don't recommend zoning out while doing so, as it can be dangerous.
I've also personally found some moderate success with making a set of goals for myself: "next three months", "next six months", and so on - and then doing individual items one at a time. Once I finish one, I focus on another and only brush up on the others as needed (and IF needed, like learning a language to a set proficiency). It allows me to get a feeling of progress on otherwise large goals, so I don't get discouraged.
Not sure if I qualify as "successful", but I'm not dead yet so that's a start I suppose.
[spoiler:lit]Also >>>adv fag[/spoiler:lit]