How can you know how to do it?

1. Try to imagine the result. As detailed, realistic and visual as possible. And then look back imaginary to the road you have travelled there. The resources you needed, the hurdles you overcame, the help you called in. Use them. It is not at all a problem that you do not immediately know how to do something, in detail, from the start. That is not uncommon. Seek help and advice.
2. Ask for advice. Sometimes it will be free, sometimes you will have to pay for it. 
3. Make a schedule and stick to it. 
4. Do the most important thing first. 
5. Go through and rearrange your plan every night before you go back to work the next day. 
6. Draw up a to-do list for the next day, then you can immediately get off the ground in the morning. 

The American author Mark Twain saw it as follows: “The secret of getting ahead is: starting. And starting is: dividing the task into smaller tasks. And getting smaller tasks done is starting with the first task. Right now. ''