https://www.psychologytoday.com/gb/blog/emotional-sobriety/201108/when-vision-becomes-tunnel-vision
Having a vision is a powerful tool. It means that you are honoring your goals, aspiring towards them, and taking risks to expand your horizons. But sometimes our visions for ourselves subtly turn into tunnel vision. We can't see anything that contradicts our intentions and desires. We get selective perception, which limits our ability to remain open and to see things clearly. Instead of being present to our reality, we put the blinders on and barrel ahead towards our hopes and dreams.
There is a shadow side to almost every positive thing we can do for ourselves, including having a vision. All spiritual and psychological tools can be used in a "willful" way. For example, sometimes self-care is actually about taking care of ourselves: unplugging from too much work and plugging into more balance and harmony. But sometimes, under the guise of self-care, we are really just checking out: denying what's happening and how scary it feels to show up for it. So, how do we know the difference?