Yes, putting all of your money in one basket is a dangerous thing, like we know there is a risk in investment, so we can't expect everything can work like we wanted, so it will be wise to only invest your extra money and put your investment in different investment, so you won't lose too much if one of your investment failed
Well said. Never put all the money in one instrument type. Always diversify your portfolio as even all the fund managers in the world do the same. Though the exposure in each asset class could vary depending upon the risk associated and your interests.