As far as possible, travel light. Always pack according to a checklist, made at least one week before your trip. It will speed up packing and let you know what you might be missing.

Essential

Ticket
Passport
Visas
ATM/Credit cards
Traveller's cheques
Hotel reservations
Travel Insurance
Mobile Phone

Business

Business cards
Address book
Business literature
Laptop and diskettes
International & local currency
Business travel Insurance
Mobile Phone
Templates of letters, Sales invoice, etc