Try to prayer slowing and if it cause you problem while stand up and prayer then try to prayer by sitting down, there is no need to be shy. I had the same problem once so I will advice you to eat fresh fruits, vegetable and from your 5 a day plate, try to move all the depression things from your mind while. If you have problem problem with your life or something bordering you then please send me private message in community site so I will help you. If nothing work then it better to see your doctor before it cause you a lots of problem, try to check your eyes because sometime that can make you feel dizzy and make your body to function slow.
Brother or sister we shouldn't be missing any prayer because this is the only way we communicate with Allah, if you suffer from anything in your lifetime share with all and as for help. The other reason we shouldn't be missing our salah is that ever miss salah cost of punishment which is 12... 3 in this life, other 3 while our soul leaving our body, 3 in grave and I think other 3 while allah ask us question ...