One thing has to be remembered about meditation: it is a long journey, and there is no shortcut. Anyone who says there is a short cut is befooling you.
Meditation is a long journey because the change is very deep and s achieved after many lives, many lives of routine habits, thinking desiring, and the mind structure. Those you have to drop through meditation. In fact, it is almost impossible but it happens.
Becoming a meditator is the greatest responsibility in the world. It is not easy. It cannot be instant. So from the beginning never start expecting too much, and then you will never be frustrated. You will always be happy, because things will grow very slowly.
Meditation is not a seasonal flower that blooms after weeks. It is a very big tree. It needs time to spread its roots.