Uncertainty is caused by a lack of knowledge. Hesitation is the product of fear.

Two truths I've come to appreciate.

Speaking generally, when you're unsure, you need more data. One of a few ways to identify the cause of being uncertain can usually be attached to the following...

1. Not enough data. You may have sought answers, trends and investigated some sources, but after weeding out the inaccurate or untrusted data, you didn't gather enough. Cast a wide net.
2. Data Sources.
3. Communicate the findings to people who add perspective and ask more qualifying questions to get the relevant information you can use.

When we hesitate and delay something, it's generally cause by a fear of some capacity. Fear of being unqualified. Fear of the real answers. Fear of being late. Fear of reprisal. Fear of being wrong. Fear of taking responsibility. Fear of owning a process by starting it. Fear of not achieving your goals. Too many numerous to think of them all. Commonality here is that fear is natural and can cripple us if we don't overcome it with a willingness to try and fail.

Be certain and swift.