"Life is a trial with errors..."
...so the best thing you can do is to learn to live with the trials and errors and then it doesn't matter that there are trials and errors... because you're still living life :D
Oh, and yes... that quote is a bit funnier than just a simple "live life by trial and error". I couldn't help myself so I was funny and made life into a trial with errors... but my message is still valid!
If it's not important that life is hard, then life being hard wont keep you from living it to the fullest extent in which you are able under your circumstances.
It's your life! No one can take that from you unless they commit a heinous crime. If you're alive, you have a life... it's that simple.