Dwain Chambers has revealed he has started seeing a sports psychologist to help him deal with the emotional fall-out of his Olympic reprieve.
The controversial sprinter, who was banned for two years after testing positive for a banned steroid in 2003, is eligible for London 2012 after a court ruling overturned the British Olympic Association's lifetime ban for drug cheats.
The 34-year-old will chase the 100 metres 'A' qualifying standard of 10.18 seconds when he takes on Usain Bolt at the Golden Spike meeting in Ostrava on Friday.
And he admitted his visits to the psychologist have been hugely beneficial to his state of mind as he gears up for a Games he thought he would never get to be a part of.
"That's been a massive help at this stage," he said.
"I turned it down for a long time because I didn't think I needed it, but God do I need it now, so I've taken it upon my self to go and do it.
"It's something that is important to me. I can put on a tough exterior, but internally there are things you need to deal with in order to get the best out of yourself.
"A lot of people said you must be over the moon at the decision (to overturn the lifetime ban).
"Honestly, I was exhausted. This is a road that we've been travelling for nine years and I didn't know what emotions I would be going through.
"It still hasn't sunk in yet. So for something that has taken nine years to become a reality, I can't expect it to be resolved in two weeks."
Chambers' meeting with Bolt will be the first time he has faced the world record holder and Olympic champion in an individual race outside a major championship.
The Jamaican leads the the rankings this year with 9.82secs and Chambers hopes he can pull him along to a quick time.
"No matter what happens, whenever you get a chance to race against Usain you can only get the best out of yourself," Chambers said.
"He's in 9.82 form and he's probably going to get faster and faster so I've just got to do my best to keep close to him."