It states (Tehillim 125:2) עוֹלָם וְעַד מֵעַת ָּה לְעַמּוֹ סָבִיב 'וַה ּלָה סָבִיב הָרִים ָׁל ִַםיְרוּש, "Yerushalayim has mountains surrounding it, and Hashem surrounds His people from now and to eternity." Reb Shmuel Wosner zt'l explains that at nighttime, people don't see the mountains surrounding Yerushalayim. In the morning, they see the mountains. The mountains were there all the time, only now they are seen. The same is ַדוְע מֵעַת ָּה לְעַמּוֹ סָבִיב 'וַה עוֹלָם, "Hashem is around His people from now and to eternity." Hashem is always with us, even when we don’t clearly see Him.
When one believes that everything is from Hashem, he will have a wonderful life. It states (Tehillim 118:7) בְשֹׂנְאָי א ֶרְאֶה וַאֲנִי בְּעֹזְרָי לִי 'ה. Rebbe Dovid'l of Tolna zt'l explained it, לִי 'ה, the sensation that Hashem is with me all the time, בְּעֹזְרָי I wish that sensation for all my friends. However, the feeling of א ֶרְאֶה וַאֲנִי, "I will see... I will do..." I wish this feeling בְשֹׂנְאָי, for my enemies. The reason is that the more a person knows that לִי 'ה, Hashem is helping him, the more success he will have in life.
It states (Tehillim 92:10) אֹיְב ֶיךָ ה ִנֵּה כִּי 'ה אֹיְב ֶיךָ ה ִנֵּה כִּי .יֹאב ֵדוּ The Baal Shem Tov zt'l explained that when a person knows that 'ה אֹיְב ֶיךָ ה ִנֵּה כִּי, that his enemies were sent to him from Hashem, יֹאב ֵדוּ אֹיְב ֶיךָ ה ִנֵּה כִּי, the enemies will disappear. The same applies to all troubles a person experiences. When he believes that everything is arranged from Above, the troubles will disappear.