Are reliance upon Allah the Almighty, trust in Him, supplication, and positive expectation considered reasons for achieving success?

Reliance upon Allah Almighty, depending on Him, supplicating to Him, and having a good opinion of Him are among the most important reasons for success in this world and the Hereafter, as Allah Almighty said: "And whoever relies upon Allah - then He is sufficient for him" and "And your Lord says, 'Call upon Me; I will respond to you.'" And in the Hadith Qudsi: "I am as My servant thinks of Me." True reliance is taking the means while depending on Allah in everything, and not sitting idly and waiting for goals to be achieved without action.