Whenever I set a goal I tell the world about it and then try to make it a group thing. Others join in and we keep each accountable. A bit of social pressure. For me and biking that means organizing a ride in the future that I know I'll have to train for. Forces me to find time where I didn't think I had time, or actually don't. Etc. I want to do a 100 miler this year. Previous long this year was about 65 miles (I'll have to check) but I've been spotty on the bike since then.
I organized a ride down to a large German food/beer place just over the bridge into Kentucky (I am in Ohio). It is 99.6 miles from my house by bike on the route I have chosen so we will easily do the 100.
This thread is for the training to get to 100 miles. There will be blog links, etc. Read along if you wish.