Failures in life should not define an individual. It is something we can learn, and grow from. You never know the possibility, until you try. Not trying leads to regrets. Trying, but not succeeding leads to personal growth.
You should always try, even if it is uncertain. Either you succeed, or you learn. It should not bring us down. It should inspire us to keep going for what we want. It shows even if things don’t go the way you planned. Life keeps moving, and it makes one stronger for enduring the failure. It can also help you to take more chances in life.
No matter what, always try. You never know where it can lead. Failure isn’t wrong or bad. It just means things didn’t work out, and that is okay, lesson learned, keep moving.
Psychology of Mindfulness 