Clichés are clichés, of course, because they are repeated with such frequency to become trite or hackneyed. Since life is full of surprises, you never know what will happen in a second, life is not a matter of milestones, but of moments.
Life is like an hourglass. Finally, everything hits the bottom. In addition, all you have to do is waiting it out until someone comes along and turns it around. These unexpected surprises needs to be confronted in life, which means you need to try again and not run away from them until you succeed.
Therefore, I suppose the answer is that using clichés is a judgment call, and one that can be very effective as long as you acknowledge in some way that you are aware of the cliché or that it was deliberate and not merely laziness. Moreover, it is just as easy to avoid clichés entirely if you would rather.
Instead of getting frustrated when things do not go as planned, expect change, ambiguity, and frustration at least part of the time. This is normal. Develop your sense of humour; learn not to take yourself too seriously.
Think positively. Instead of telling yourself a task is impossible, tell yourself that you have reached a momentary impasse and that a solution does exist and will eventually come to you.