25 Tips for New Developers: Advice from a (Mostly) Self-Taught Software Engineer

Take Breaks

I cannot recommend the Coursera Learning how to Learn course enough. One of their main focuses is on the two types of thinking: focused and diffuse. Focused is when you're concentrating on learning something or solving a problem. Diffuse is when you're in a more relaxed state. Often times, the diffuse mode is where links are made from one topic to another and knowledge is solidified. You may have heard the trope of "solving a bug in the shower", and it holds a lot of truth! Make sure to take breaks and step away from your computer. It's so important for learning and life balance!
In addition, sleep and exercise help with learning as well -- make sure you're taking care of yourself and not just coding all the time!

Fixed Vs. Growth Mindset

Believing that you can learn something is a huge part of actually being able to learn it. Carol Dweck's book "Mindset" focuses on the fixed vs. growth mindsets. In a fixed mindset, you believe that your attributes are static and that they will be unable to learn or improve their talents. In a growth mindset, people believe that they can improve and learn. People with a growth mindset are much more likely to put the time and effort needed into learning new material, and they're much more likely to enjoy learning. There are many factors that go into a growth vs. fixed mindset, such as upbringing and educational environment, but if you find yourself in a fixed mindset work on growing a growth mindset.
Ness Labs has a bunch of amazing posts on neuroscience, and this post has a bunch of strategies for moving into a growth mindset. Some include: acknowledging the research that brain structure is not fixed, appreciating criticism, and putting a positive framing on failure.
Believing in yourself is such an undervalued yet important piece of learning!