We can feel greatly bogged down by the idea of separation. "There is the universe, then there is me, then there are my thoughts and emotions." The “me” tends to get stuck in the middle of everything, feeling as if it suffers thoughts and emotions, and yet should be able to grab hold of the negative ones and turn them positive through resistance.
A different and relieving perspective can be to assume that everything you experience is the energy of the universe. It isn’t yours to manipulate.
If you give yourself a rest from trying to control how you are feeling at all times, you might find that through your lack of resistance, you find relief from what you were previously fighting against.
It is easy to forget that we are extensions of Nature, and that there is a foundation to our bodies and minds that we are often not aware of. Give your experience back to Nature, and see if you feel any sense of lightening. Or enlightenment.