To end the misery that has afflicted the human condition for thousands of years, you have to start with yourself and take responsibility for your inner state at any given moment.
That means now.
Ask yourself, “Is there negativity in me at this moment?” Then, become alert, attentive to your thoughts as well as your emotions. Watch out for the low-level unhappiness in whatever form, such as discontent, nervousness, being “fed up”, and so on. Watch out for thoughts that appear to justify or explain this unhappiness but in reality cause it.
The moment you become aware of a negative state within yourself, it does not mean that you have failed. It means that you have succeeded. Until that awareness happens, there is identification with inner states and such identification is ego.