False. Lack of experience does generally increase a speaker's public speaking anxiety.
The prefix 'dis' means apart, away; that is to move away from something while the prefix 'sur' means over, above.
To dismount means to get off something or to remove a thing from its support. For example: The king dismounted the horse majestically.
To surmount means to overcome a difficulty or an obstacle. For example:
All the political differences between the two countries were surmounted.
A long walk in the park or a short run around the block works for me.