Whatever energy one puts out is the energy they will receive.
Positive thoughts will bring positive experiences. Negative thoughts will bring negative experiences. The same goes for the energy that one attracts. Positive vibrational energy will attract positive energy. Negative vibrational energy will bring negative energy.
This closely relates to the concept of the “self fulfilling prophecy”. If one only focuses on what they think will go wrong, then things will most likely go wrong. If one remains optimistic and focuses on everything that can and will go right, then things will work out in their favor.
Like attracts like.
Don’t believe everything you think.
Sometimes people can be so used to repetitive negative thoughts and identifying with thought that they begin to truly believe certain negative thoughts to be true, when in reality, they have nothing to do with the Truth.
Once one becomes aware of thought, they then have the power to recognize what thoughts bring them suffering versus what thoughts bring them inner peace. Once one makes this connection, they can then let go of the thoughts that induce nothing but negativity, and focus more of their attention and awareness on their positive thoughts.
One can try letting go of what no longer grows them, serves them, or makes them happy.