Asset allocation is an investment strategy undertaken by investors in efforts to balance out the chance of different investments with their return. For an investor to have a good portfolio, it is best for them to do this, diversifying their assets among the types of assets - called the classes - according to their needs. Making use of all the many types of investments that are available, keeping in mind their differences in risks and returns, an investor can hope to profit much while staying fully in control. However, the very easily helpful practice of asset allocation is not so easy to carry out. First, the investor should understand that their needs are not the same as those of the next investor. How an investor best allocates their assets is contingent on their ability to take on risks and their goals, among other factors. Investors can proceed forward by watching the risk/return balance over the years and making allowance for that in their decisions.