1. Study yourself
The most interesting knowledge in the world is the knowledge about yourself, which you, having come into this world, will receive all your life. Knowing what makes you smile and what makes you sad. Knowing (and respecting) your needs in order to subsequently satisfy them and, as a result, become happier. After all, what is happiness without satisfaction of one's own values? But first, these values ​​need to be defined. This is what you do!
2. Take care of yourself
Many people lack such a simple and important thing, namely, care. And not only and not so much from others, but from themselves.

We love to take care of other people, often in a fantastic pursuit of their recognition and gratitude. To deny yourself a lot, sometimes sacrificing your comfort just so that other people appreciate these sacrifices - how similar to us. And here a surprise awaits many: instead of gratitude, they receive a cookie with butter. Why? Yes, because no one will take care of the comfort and recognition of someone who does not take care of him himself. You can become a happy person only by taking care of yourself.
3. Find constructiveness in everything that happens to you
Our whole life is one big lesson with permanent exams. Approaching this constructively (mind you, not positively, but constructively), you will find optimal solutions, and much faster than if you lamented and complained. I once drew a parallel with a ship on which the crew during a storm rushes around the ship in fear instead of taking control and enduring the blow with the least losses. And this is not about the positive, but about the good old common sense.
4. Create your luck
Yes, luck can be created. Everyone has a different size, and even though sometimes it looks like a tiny sprout breaking through the asphalt of the troubles of your life, you can still grow and strengthen it. How to do it? Very simple: observe any moments of luck in your life and direct your focus of attention to them.
5. Create an image of the desired future
Many of us, thinking about our future, imagine some completely ordinary, and sometimes even depressing things. At the same time, if you ask people who openly say that they are happy and have achieved what they want in life, it turns out that when they thought about the future, they saw the best options for it and themselves in it. And this was the right decision: in this way they gave commands to their unconscious, which, guiding most of their actions and thoughts, led them in small steps to what they have now.

Don't be lazy, help your unconscious help you!