Do not be discouraged if you fail a few times.

Why do some people often feel frustrated even though they are capable of doing something?

And one of the most frustrating things about the system was that it gave no warning when it was out of power (as it was often because it lost charge very quickly) but just shut down.

If you have a great goal in mind, don' t give up on it, no matter how apathetic, exhausted, or frustrated you might feel.

Don't lose your hope, every dog has his day.