Your worries are the result of two things:

1) You lack complete trust in Allah. We must know that Allah is the Wakeel; the one who manages everything in this world and He is the One we must put our all trust in Him. He is the most beneficent and generous.

2) You listen to the insinuations of the Shaytan. Allah says in the Quran what means, “Satan threatens you with poverty and orders you to immorality, while Allah promises you forgiveness from Him and bounty. And Allah is all-Encompassing and Knowing.” (Al-Baqarah 2:268)

The healing remedy of what you suffer from is to keep yourself busy with dhikr (remembering Allah) and with prayers. Allah says what means, “Indeed, mankind was created anxious: When evil touches him, impatient, And when good touches him, withholding [of it], Except the observers of prayer – Those who are constant in their prayer. For the petitioner and the deprived – And those who believe in the Day of Recompense. And those who are fearful of the punishment of their Lord -” (Al-Ma`rahij 70: 19-27)

Almighty Allah knows best.