It is apparent from the Gemara in Masechet Berachot daf 20 that when a person is moser nefesh and gives up of himself to follow the will of Hashem, that makes the person worthy of receiving a miracle from Hashem. Rav Shemuel Razovsky, the Rosh Yeshiva of Ponovitch, explained the connection between the two based on the Malbim in this week’s parasha, Kedoshim, explaining the words of the midrash אם מקדשים אתם עצמכם, מעלה אני עליכם כאילו קידשתם אותי . Says the Malbim on those words, if we will rise above our nature of being drawn towards physicality, and rather sanctify ourselves with spirituality, then kavayachol, Hashem will rise above the way He made this world, which operates according to the rules of nature and He will deal with us in a way that transcends nature.
Mesirut nefesh produces wonders.
Shabbat Shalom!