You do not need a complicated method. Nearly every system that works comes down to the same five steps. The trick is making each one small enough that you will actually do it.
1. Capture everything in one place
The first job of a system is to make sure nothing lives only in your head. Choose one inbox and use it for everything. In Minmento that is Quick Capture: press Ctrl + Space, type the thought, press Enter. The rule is that capturing should take less than five seconds, or you will skip it.
2. Organize lightly
Resist building a perfect structure on day one. Start with a few lists for projects, one or two folders for areas of your life, and a handful of tags for contexts like #calls or #deepwork. You can reorganize later, and tags cut across lists so you rarely have to.
3. Plan the horizon
Use different views for different questions. Today answers "what now?". The Timeline answers "is next week overloaded?". The calendar answers "when?". If you manage work through stages, switch to Kanban.
4. Do the work in focused blocks
Pick the next task and start a focus session. A fixed block makes starting easier and stops tasks from expanding to fill the day. Use the focus record to see how much deep work you actually did.
5. Review weekly
Once a week, spend ten minutes on three things: look at Completed to see what you finished, clear or reschedule what is left, and check Next 7 Days. This is the step most people skip, and it is what keeps the system from rotting.
Add habits last
Habits are a different thing from tasks: small, repeated and long-term. Keep them out of your task list, and track them in the Habit Log, where a year of check-ins shows the pattern.