Whatever you will say on echo point will reflect back to you.For example you say I love you the sound of I love you will echo back and will fill your face with smile. Likewise, if you will say I hate you even that sound will be reflected back, but for sure you will not like that sound. As no one wants to hear I hate you.
In a similar manner Life is also like an Echo.You always get back what you give. If you will keep sounding off about life, do not see the positivity in your existence, keep hatred for others, play with their emotions than you can never expect goodness in return.
On the other hand, if you sustain a positive outlook towards life,show willingness to accept the challenges, realise that every person is important and greet them with love and smile everything will come back to you in double amount.
There is an abundance of both positivity and negativity in the universe and it entirely depends on you what you choose for yourself.