For Technological challenges developments to be carried out :
to
be
met
&
innovative
Guidance and Supervision A)
B)
Reasonable Definition of Job
Mid course reviews by seniors & peers
If you know about the final end product
Mid course corrections
Proto reviews Final Product review
You must also know how to do / go about it Rest is hard work C)
Money does not encourage (on short term basis), but it is the technical freedom of work + technical challenges, which encourage more provided reasonable monetary benefits & working environment & ambience are provided
D)
Always have a time bound goal of never more than 2 and half years.
Note : This assumes that aim is not to reinvent the wheel or a wish that miracle may happen