Mark Wotte felt he could do no more as Scottish FA performance director, but insists his work will have long-term benefits.
"I didn't have the ambition to get Scotland up a level again," Wotte told BBC Scotland.
"The Scottish FA and the strategy, the 2020 vision, is not finished in 2014."
The performance director post was created in the wake of former Scottish first minister Henry McLeish's two-part report into Scottish football.
During his time in Scotland, Wotte spearheaded the country's performance schools - seven in total - and also worked with the national team's age-grade sides.
After stepping down last month, Wotte responded to critics of his regime by highlighting what he regarded as a reluctance to change.
"If you come into a job like the performance director and you have to change things in the country, you can only make as much of an impact as we did," he explained.
"To take it to another level, it's really difficult and you need to have the full support. You need to have everybody buying in and we [chief executive Stewart Regan and I] were both happy to call it a day.
"I have done my bit, I've shared my experience and it's good like this.
"But now of course it was only a start. In the first three years of the programme, we have implemented all these projects and programmes and now maybe somebody else will bring it to fruition."
And Wotte is hopeful that by 2020, the standard of Scotland's professional footballers will be higher.
"The end products will be in four-to-six years," the Dutchman added.
"I have tried to sort out the bigger picture of Scottish youth football and sometimes you've got to disappoint people.
"If you want to do this job and want to only be liked, and everybody thinks 'what a nice guy', you can't do your job very well.
"You cannot please everybody in Scottish football.
"I loved my time [in Scotland]. I wish everybody in Scotland a really good football future."