My life feels like its on a downward spiral. need advice to uplift my spirits.?

really, how much can one person take. i see myself as a good person, with only good intentions in life, but for somereason, when the tough gets tough, it seems to come crashing down on me from all angles and its causign me alot of depressed feelings. this is currently the issues in a nuttshell.. b/f gets fired from job, the day i get one. 4 days l ater my son gets kicked out of the preschool due to horriable behavior. looking for new job, and placed my son in another school with help from his doc. the car completly stops working and is sitting in the parking lot of my apt, broke down.. b/c of my b/f job change,he got his first paycheck a week after the rent was due. i had to take the money o had in my savings to pay bills for my half of the portion and some of his. so we are very broke.. he now for the past 4 days walks 45 minutes on foot to the job. mind you no sidewalk, so slushing through snow and all...foudn out my son might have PDD (pervasive developmental disorder) so he is