I know of two older singles who were told to stop pressuring Hashem with their constant Bitachon to get what they want. Instead, they were told to keep saying words of accepting the situation, like: נֶאֱמָן עָלַי הַשּׁוֹפֵט (I trust Hashem’s judgment). Both of them saw a sudden improvement, and Shiduchim started moving as soon as they started this approach.
Within a few months, both were engaged. I know a Yungerman who had a serious kidney issue, and despite all his Tefilos, he couldn’t have children. As soon as he accepted his situation, his wife became pregnant.
Even when you are having Bitachon to get what you want, the experts say that instead of being always tense and worried (“When will my Bitachon work?”) you should proceed B'menucha and in a relaxed mode.
There are people who daven a lot and are tense. It is worthwhile to “take off” one day a week, and spend all your time thanking Hashem for every tiny goodness of your life. This can be a gold mine. This way you become an Ahron, whose Simcha level brings all kinds of blossoming goodness.