Not making a decision is the worst thing you can do. So long as you feel you made the right decision based on the information you had at that time, there's no need to fret about it. If it fails, you'll know what to do next time.
1564 - 1616
1803 – 1882
1854 – 1900
1942 – 2016
1928 – 2014
1835 – 1910
1869 – 1948
1884 – 1962
1898 – 1963
1929 – 1993
1879 – 1955
1809 – 1865