As difficult as it can be, I recommend that all young professionals build a cash-like reserve equal to three to six months of their annual income. This can be a savings or money market account, or short term (less than 1 year) certificates of deposit. This is a reserve to be drawn upon in the event of an emergency, like a loss of a job. Again, it takes personal sacrifice to do this, but it is wise. In fact, all of us should have such a reserve.