I think sr. noonooo your trouble is that u assume problematic situations and get anxious about them. Like "what if such and such happens what will i do then" Isn't it? This thought pattern is bound to lead to anxiousness, worry and depression. Why should we look for total security all the time? No human being is secure. Its upto Allah to keep us in security or expose us to harsh winds. There is nothing any human can do but pray nad have patience.
IF'S open wide doors for Shytan to enter ur mind and mess up with it. Anything can happen anytime and believe me the misfortunes that befall are rarely the ones u have lost ur sleep over. They are different things which we did not even think of. They are from Allah and the capacity to bear them is also from Allah. Live one day at a time. Our prophet said that and so did Jesus (PBUH) and so do all the mental health professionals around the world. Enjoy each day by doing things that excite u. Read Quran translation like a psychology book. Look between the line. And because none of us are going to enter Jannah without a test wait for that rough time to come and be glad about it because that will be ur opportunity to perform well (with sabr, and faith) and qualify for Jannah. And till that time comes just enjoy everyday. Look around and u will not find a single person without atleast one major problem in life. So why should u be left long without one