For anyone to consider personal development seriously, two things are paramount.
1 Direction — ideally this should come from external trigger, maybe Guide, Coach or a Mentor, physical or virtual.
2 Devising your own (evolving) system of learning . This is more beneficial than following some list of book or blog. Books and blogs should be conveyed to the point of inspiration and tip for devising your own tools and regime.

The solitary thing you will need for a while is an initial sustained effort. Once some progress is found out, it automatically gets the required motivation and sustenance.