I feel like I won't get what I want if I just [sit] there and do nothing.
That's unsurprising. Has anyone ever gotten anything by sitting there doing nothing? This does not seem to be the kind of trust one should aim for:
O Allah! I ask You for guidance, piety, chastity and self-sufficiency. -- Prophet Muhammad, reported by Abdullah bin Mas'ud (source: http://sunnah.com/riyadussaliheen/1/71)
We can trust in Allah while simultaneously seeking to do things ourselves. Indeed, the Qur'an says we need to strive for our goals:
And that there is not for man except that [good] for which he strives. And that his effort is going to be seen, then he will be recompensed for it with the fullest recompense. -- Qur'an 53:39-41
We trust Allah to guide us to the straight path, and He may help us find the fortitude to walk it, but in the end, we're the ones who need to walk it.
If they would only put their trust in Allah as they should, He would provide for them like he provides for the birds who fly out in the morning hungry and return fully satiated. -- Prophet Muhammad, narrated by Sunan al-Tirmidhī (2344) and Sunan Ibn Mājah (4164)
The example of the bird going out in the morning shows us that one of the greatest expressions of faith and devotion is to take all practical steps to achieve our goals while at the same time placing our complete reliance upon Allah for the outcome (Al-Oadah, 2012).
(Sourced from: http://muslimsuccess.com/robins-trust-allah/)