Just because ideas can be hard to turn into something concrete, it doesn’t mean you should stop having them. There always should be – and there always is – room for the bright idea.
What you could do however is to stop thinking about the quantity of ideas you could have and focus all your energy of the outcome, you want to achieve.
If you have a great – sorry – idea about the problem you’re trying to solve and where you want to take your company down the line, you need fresh ideas. And chances are the ideas you will get by having a sharp focus on the outcome will be both relevant, valuable – and absolutely worth pursuing.