Happiness is simple, as simple as living life in control of problems. And the result of this ability to control problems is what we commonly call "no more stress." Yes, when there's no more stress, life will undoubtedly be calmer, lighter, and more burden-free.
So how do you create this sense of no more burden?
Actually, there are many things that can cause it, and it can also arise from each individual. However, there's one thing that's easiest and perhaps the most common way to avoid stress: not trying to do things beyond our control.
Stress comes from a variety of things, and even if we try to avoid it, it can still affect those who are trying to avoid it. The most common is overthinking things, or being overly anxious about everything. In fact, it's precisely because of this anxiety that stress arises.
So, to summarize, stress is caused by excessive worry, which leads to forgetting that life is simply the way it is. And the only thing that can bring awareness is awareness, so that through awareness, humans can realize that all humans living in the world, regardless of their differences, are equal in their lives.