Life comes with lots of struggles and obstacles. Life is a journey we have no other choice than to embark upon and you can't accomplish this without hurdles.
There will always be setbacks and disappointments. You can't have it all smooth and nicr. Yes, there will be good and sweet times but put it in mind that there will be bad times too. That is life for you.
Don't beat yourself too much about it. Don't hate nor blame yourself in as much as you are doing your best and not lazying around. Sometimes our failures are meant the take us off the wrong rail and put us in line.
Don't wallow too much in your failures. Learn from them and start again. If you are tired, rest but don't quit. The race is not about starting well but finishing well.
Sometimes the best thing you can do is not think, not wonder, not imagine, not obsess. Just breath, and have faith that everything will work out for the best.
So motivating.... always learn to count your blessings in hard times and feel better