It is through the yoga practice that we learn to expand. We work first on the physical level, stretching and strengthening the body to become more open. This can this extend into the mental and emotional bodies. As we expand more, we become lighter, freer, and more tolerant; overall, better managers of our selves and our lives.
I heard a metaphor once. If salt is added to a cup of water, you notice immediately. The water has been tainted, you can taste it, feel it, maybe see it. However, if that same amount of salt is added to a lake, you do not notice. Because the lake is vast. Smaller quantities of negativity or any sentiments will affect you less and less, they will taint you or spoil you or change you. You will be stronger as a result of becoming more spacious. Be vast like the lake.