It's a combination of the following: 1. By deep-diving in topics I encounter during work (this is not limited to programming skills, but also e.g. product/peop

It's a combination of the following: 1. By deep-diving in topics I encounter during work (this is not limited to programming skills, but also e.g. product/people management). 2. By taking on difficult projects 3. By working and keeping in touch with experts 4. By teaching other people what I know