This is the best answer that i've been trying to live by concerning the topic you brought up:
Matthew 6:
19 Lay not up for yourselves treasures upon earth, where moth and rust doth corrupt, and where thieves break through and steal:
20 But lay up for yourselves treasures in heaven, where neither moth nor rust doth corrupt, and where thieves do not break through nor steal:
21 For where your treasure is, there will your heart be also.
Our family had a good teaching moment on this the other night as a low grade tornado barreled through and we got pounded with wind rain and golf ball sized hail that beat against our home. We had less than 2min to react and hunker down. Not a single toy in our homes could have come to our rescue...or calmed the hearts of our kids...or wiped the tears from their eyes. They can't do anything for you when you are depressed or are alone or overcome with grief. They may bring a temporary smile but are soon forgotten amidst the others.
James 4:
13 Go to now, ye that say, To day or to morrow we will go into such a city, and continue there a year, and buy and sell, and get gain:
14 Whereas ye know not what shall be on the morrow. For what is your life? It is even a vapour, that appeareth for a little time, and then vanisheth away.
15 For that ye ought to say, If the Lord will, we shall live, and do this, or that.
16 But now ye rejoice in your boastings: all such rejoicing is evil.
17 Therefore to him that knoweth to do good, and doeth it not, to him it is sin.
This always hits home with me because, by nature we are planners and we sort of deceive ourselves into thinking we have control over this or that...but in reality, nobody sits around planning to die in their sleep, or for a heart attack or an aneurysm or a stroke, or car accident etc. That is why we need to be ready daily and think about these things while we can. It sobers us up.
Psalm 39:
4 Lord, make me to know mine end, and the measure of my days, what it is: that I may know how frail I am.
5 Behold, thou hast made my days as an handbreadth; and mine age is as nothing before thee: verily every man at his best state is altogether vanity. Selah.
6 Surely every man walketh in a vain shew: surely they are disquieted in vain: he heapeth up riches, and knoweth not who shall gather them.
7 And now, Lord, what wait I for? my hope is in thee.