Every person have something special and something which they are good in. Many of us are good in writting, painting, making dolls, dresses, architecture, management, business, talking, etc. If we can find out our own "good in what" then we can find out the success easily. You can look at the famous persons as an example. They all may be climbed into their career or success is because they knows themselves; what they are good in.
If we try to do the things which we are "not good in" then that make us to struggle; even failure. Life is like a war which we have to fight every second, but we have to know how to defeat the enemy by using our best in what we are.
Finding out that inner Hanuman doesn't need much time. It just need only a fraction second, divert us towards our own world. Think for a few second when you are confused or when you gets failures. What making us to fail or confused? Is that I am not good in it? "Yes, I am not bad. I am really good in it." If it is the answer then "do your best". That will surely will make you happy and make you succeed.
One of the asana which make us struggle is Hanumanasana. Pushing our two legs in two directions till get a complete split. Reaching this asana need more patience and inner identification about our self. Even we reach that level, if we hold this posture then it will give us more physical and mental opening which we never enjoyed before. That's the power of Hanuman. Find out our inner cosmic Hanuman!