Analytical chemistry is a highly practical subject, which can be said to be ubiquitous in food, forestry, medicine, environment, metallurgy and so on. In terms of employment, many jobs are also easy to succeed, but most of them are simple, boring and low-paid.
Organic chemistry is a new discipline and the most dynamic direction in chemistry. It has a wide range of applications: polymers, materials, medicine, petrochemical industry and so on. In terms of employment, there are many jobs, but the requirements are very high. You must have certain ability and quality, work hard at the same time, and be a high-paying industry.
Physical chemistry is a subject that studies the basic laws of chemistry. It is not perfect so far, but the person who does this work should have enough talent and excellent mathematical and physical foundation.