What actually happens during learning? Today it is assumed that the information lies in the networks of nerve cells . New contact points, so-called synapses, are constantly being formed between the 100 billion nerve cells when we learn something.
In order to be able to learn and for new networks and synapses to form, you need dopamine. It is the molecular helper of learning. And the side effect is, dopamine (and with it the learning process) makes us happy.
The brain becomes what we use it for. If we use it for problem solving, it becomes a problem solver. If we are creative, it develops creativity. And if we nag all the time, it develops networks of pessimism. If we want to develop further, then it is up to us to set the issues correctly.