The answer is NO. This is a very common concern and it is commonly misunderstood.
How can your life get worse if you go to many different Bazi analysis?
Whether your life gets better or worse after going through a Bazi analysis or reading is solely dependent on yourself. If you are optimistic, the information gained from the reading can be used to improve your life. You will focus on the positive aspects and find ways to minimize the negative aspects.
On the other hand, if you are pessimistic, you are better stay off not to do any form of BaZi Four Pillars destiny analysis at all. This is because you will only focus on the negative aspects; dwell and dwell on it every single day till you become more and more depressed over it. This in turn becomes self-fulfilling prophecy and this will make your luck gets worse!