The action is fundamental for any achievement that is desired, nothing can be achieved if one does not act after having cultivated a fixed idea in his mind.
Never stand still, if you have set an objective work for it, if in your environment you can perform some action conducive to your goals, do it.
But you can also do it in your particular space, read a book, write something, look up information on the Internet, talk to someone on the phone. All this done frequently, will accustom his mind to ideas of conviction that nothing is going to stop him in what he wants to achieve.
It may be that in the process you make mistakes and there is some slip, or maybe you take the wrong path. Then you have to be attentive to correct yourself, to stop and calmly repeat that those little trips are part of that process, it is very stimulating to keep going knowing that you are capable of overcoming the obstacles that arise along the way.
The action, this clear must be something permanent. But when it comes to the objectives, before moving on to the action that has to do specifically with the desired objective, you must sow the idea in the subconscious, it is through perseverance cultivate self-convincing ideas that what you crave will achieve, be it at work, in business, in health, love, money, etc.
When your mind overflows with that self-knowledge of being able and convinced to achieve it, then that is the time to take action, that's when you can plan some strategy to follow to achieve your dream, or you can even let the Universe Take care of everything including the result.
While that moment arrives your other actions should be directed to other matters of your life. Nature works like this, without attachment for results and a strong desire. You will act without much effort to achieve your goals, if your actions are framed within the knowledge of the laws of the Universe.