You can make some direct selling products that you think are helpful to public health. Contact with some friends who do direct selling, you can learn a lot of knowledge that you can't learn in school.

As for the specific things, it depends on your personal interests. The industry and position I recommend may not be what you like. Therefore, it is the most basic standard to feel for yourself and do a job that you think can make yourself happy and make others happy.

Now you don't need to take the dietitian certificate. It's not too late to get this certificate when you know the relevant industries and learn a lot about it, because it doesn't make any difference to you whether you have this certificate or not now. The most important thing in practical work is experience and ability. It's not a certificate