The central teaching of Buddhism is mindfulness, which leads to insight. Insight removes craving and delusion, the causes of suffering, and so a diligent meditator enjoys mental peace. Ultimately, one can attain the goal of nibbāna — the end of all suffering.
The practical teachings of the Buddha are open to all. Suffering is a universal affliction, craving and ignorance are universal traits, and mindfulness is a universal remedy. Mindfulness is the only way to identify and eliminate the causes of suffering.
Buddhism is a religion to many, others regard it as more of a philosophy. In fact, it is a practical method to purify the mind and gain the highest happiness. Whatever you believe, it is best to rely on hard work and intelligence for making improvements to your life.