It is very possible if we are really excited in a motivational seminar or workshop. Almost all the people feel like that. The problem is how do you keep the spirit even though you are alone, just you and the remaining spirit inside. Just say you are entering new areas, new jobs or other new things that you have to get in alone.
These such things you can do:
1. Make notes during the seminar resume, and read it more.
2. Have books written the same topic with the seminar, and read it more.
3. Have recorded Audio/ Video of the seminar and listen to it more.
4. Build relationships with the seminar organizer, or
5. Relations among participants seminar.
The easiest point of them is hearing or watching the recorded audio/ video seminar as often as possible. Hope your spirit will remain strongly.