my advice for SHRPG: set up a checklist that works as follows:
1) decide on a long term goal for your character. what is his end motive. his final plan.
2) start considering his abilities. what he's good at.
3) look for a way to apply that towards reaching his motives.
4) ???
5) profit

Also, if your character lacks certain traits or abilities he may need to reach his goals, don't be afraid to write other players into your plan. my character Atlas, for example, isn't capable of acquiring test subjects himself without drawing heat from the authorities. So he hires criminals to do the job for him. there are certain fields of business and science he wants to gain access to, so he looks for people who have that access and find a way to put them in his debt, therefore gaining access to where and what he wants. It's like planning a camping trip
