So you need to eliminate your concerns first, otherwise it will be difficult for you to do anything well.
In the past, I would recommend you read a variety of design books, such as cognition and design, design psychology, and design rules. However, now I will first recommend you do one thing: hone yourself and make yourself more willing to serve others.
If your mind is worn out, you can learn the skills to get twice the result with half the effort. Otherwise, you will find that designing this path is hard-pressed and hard-pressed, and you will become one of the hard-pressed members in the world, you will lose enthusiasm for this industry and career.
This may be boring, but it is a kind of feeling I have gained through my personal experience.
In principle, designers serve products and users. From an early perspective, we serve all kinds of partners, such as PM, such as vision, such as research, such as development.
A good interaction designer will bring his or her thinking habits to life. For example, when dealing with people, they will instinctively consider others, I think about how I express others to understand clearly. I think about what changes I make to others' emotions when I do this, and I will be very sensitive.
These are based on the willingness to serve others, the willingness to serve others, and the willingness to observe the services of others. This is a unique attitude of Interaction designers.
One simple way to identify whether you have a service mentality is: when your design is "must be changed" by others, what is your first response? If you are still preparing for the attack and are still maintaining your so-called "authority", it means that you are not qualified and need to continue cultivation.
Finally, I wrote a lot of words, but I didn't mention "What did I do in the past", "Major", "education", etc. Why? I think you can understand it yourself.