In order to make an informed career decision, you should look at your values, interests, personality and skills.
Values
Work values play an important role in one's job satisfaction, include autonomy, prestige, security, interpersonal relations, helping others, flexible work schedule, outdoor work, leisure time, and high salary. Think about how important each value is to you.
Interests
What are your likes and dislikes regarding various activities. Examples of interests are reading, running, gardening, and knitting. It helps to know what type of work you enjoy doing.
Personality
What career suits your personality. Look at your individual traits, motivational drives, needs, and attitudes. The most frequently used personality inventory is the Myers-Briggs Type Indicator(MBTI).
Skills
Make a list of your skills. You can make some changes by acquiring the skills you need for a particular career.