(not sure if this is what you are looking for, but here is a small thing I made up to hopefully at least get you started!)
The influence of self-esteem on teens participating in risky behavior can sometimes be major. While not all teens struggle with their self-esteem, many do. This can result in the doing things they may not otherwise do as they do not have the high esteem to take care of themselves better. As said before, this does not apply to all teenagers, but "having good self-esteem may help them to handle relationships in more mature ways."
Answer: exercise secretes a hormone called endorphins which makes you happy
B. Sleep Disorders because thats mental
Say no to drugs
Life and Death Situations
The beginning of the end
Hope I helped :)