Find new people, interact with them this will help you learn new ideas and understand how to communicate with different personality types.
Observe others
Looking and observing people can inspire you in several ways. This could be someone you know, such as a supervisor, family member or public figure.
Keep a journal
Writing down your thoughts every day can help you gain self-awareness. Always keep a notebook or a diary to note down recent events, and conversations.
Meditate
Meditation can help you focus on your self-development and goals in a healthy, positive and calm way.
Get a mentor
Find mentor, he/she could be a manager, professor.This person can help you identify ways to build your self-development skills.
Improving personal development skills is mandatory. Refer Top recommended Study material, Test Series.