The first truth is that life is suffering i.e., life includes pain, getting old, disease, and ultimately death. We also endure psychological suffering like loneliness frustration, fear, embarrassment, disappointment and anger. This is an irrefutable fact that cannot be denied. It is realistic rather than pessimistic because pessimism is expecting things to be bad. lnstead, Buddhism explains how suffering can be avoided and how we can be truly happy.
The second truth is that suffering is caused by craving and aversion. We will suffer if we expect other people to conform to our expectation, if we want others to like us, if we do not get something we want,etc. In other words, getting what you want does not guarantee happiness. Rather than constantly struggling to get what you want, try to modify your wanting. Wanting deprives us of contentment and happiness. A lifetime of wanting and craving and especially the craving to continue to exist, creates a powerful energy which causes the individual to be born. So craving leads to physical suffering because it causes u
The third truth is that suffering can be overcome and happiness can be attained; that true happiness and contentment are possible. lf we give up useless craving and learn to live each day at a time (not dwelling in the past or the imagined future) then we can become happy and free. We then have more time and energy to help others. This is Nirvana.
The fourth truth is that the Noble 8-fold Path is the path which leads to the end of suffering.